Chicken Pesto Spaghetti Squash Recipe
If you’re ready to fall in love with a nourishing meal that’s both comforting and wildly flavorful, Chicken Pesto Spaghetti Squash will have you hooked from the very first bite. This dish swaps regular pasta for perfectly roasted spaghetti squash, tossed with a punchy homemade pesto and juicy seasoned chicken thighs. It’s a crowd-pleaser that packs in color, texture, and satisfying goodness—and honestly, you won’t even miss the noodles!

Ingredients You’ll Need
There’s something magical about a recipe that comes together with fresh, straightforward ingredients—each one playing a crucial part in creating layers of flavor and texture. Let’s dig into what you’ll need for Chicken Pesto Spaghetti Squash:
- Spaghetti squash: Roasted until tender, this veggie is the star, breaking into noodle-like strands that soak up all the pesto and juices.
- Avocado oil: Used for both roasting and sautéing, it’s a neutral, high-heat oil that keeps flavors clean and the chicken juicy.
- Sea salt: Just a pinch enhances the rich, fresh notes throughout the whole dish without overpowering it.
- Boneless chicken thighs: These offer extra tenderness and robust flavor, especially when diced and quickly browned in the skillet.
- Paprika: Adding color and smoky depth, it elevates the seasoning on your chicken.
- Garlic powder: A must-have for both subtle warmth and that irresistible, savory aroma.
- Fresh basil leaves: The heart of the pesto! Lush, green, and fragrant, they make the sauce burst with herbal freshness.
- Pumpkin seeds: A clever alternative to pine nuts, giving the pesto creaminess, a gentle crunch, and a toasty flavor.
- Large clove of garlic: Essential for flavor—one clove goes a long way in brightening the pesto.
- Parmesan (optional): The finishing touch for those who want a rich, nutty kick (skip for a Whole30-friendly option).
How to Make Chicken Pesto Spaghetti Squash
Step 1: Roast the Spaghetti Squash
Start by roasting your spaghetti squash. This step is key, as roasting brings out the squash’s sweet, nutty flavor and transforms the insides into tender, noodle-like threads. Pierce it a few times, cut in half, and roast cut-side down. Once cool, use a fork to scrape out the beautiful spaghetti strands—trust me, this is seriously satisfying!
Step 2: Make the Homemade Pesto
While the squash is in the oven, whip up the vibrant basil pesto. Add fresh basil, pumpkin seeds, parmesan, garlic, and a dash of salt to your food processor. Pulse a few times, then slowly stream in avocado oil while it’s running. This method ensures an ultra-smooth, almost creamy pesto that clings to every strand of squash.
Step 3: Cook the Chicken
Time for the chicken! Heat a skillet and drizzle in avocado oil. Add your diced chicken thighs and sprinkle them with paprika, sea salt, and garlic powder. Brown the chicken in batches by letting it sear untouched for a few minutes, stir, then repeat for golden edges and juicy insides. After about 2 to 5 minutes covered, it will be cooked through and tempting enough to sneak a bite—but save it for the toss!
Step 4: Toss It All Together
Once the squash has cooled and your kitchen smells amazing, slide the spaghetti strands into a big mixing bowl. Pour in your pesto and toss until every bit is coated, then fold in the sizzling chicken along with any flavorful pan juices. Give it a taste, add a pinch of salt if needed, and prepare to be wowed by how well these flavors meld together.
How to Serve Chicken Pesto Spaghetti Squash

Garnishes
Sprinkle a handful of fresh basil ribbons, a shower of extra parmesan, or even some toasted pumpkin seeds right before serving. Each of these adds instant freshness or crunch, making the dish look and taste extra special.
Side Dishes
This satisfying meal rarely needs much alongside, but it pairs beautifully with a crisp green salad tossed in lemon vinaigrette or a platter of roasted veggies. If you’re serving Chicken Pesto Spaghetti Squash to guests, offer a crusty loaf of bread for scooping up every last drop of that herby sauce.
Creative Ways to Present
For a fun twist, serve the finished dish right in the spaghetti squash shell—it’s rustic and downright eye-catching. If you want to get even fancier, try mini portions in ramekins for small plates, or add a few roasted cherry tomatoes on top for color pop and a tangy contrast.
Make Ahead and Storage
Storing Leftovers
Chicken Pesto Spaghetti Squash holds up surprisingly well in the fridge! Pack leftovers in airtight containers and keep them chilled for up to three days. The flavors deepen as it rests, making for a seriously delicious lunch the next day.
Freezing
While spaghetti squash and pesto can be frozen individually, for best texture, assemble the dish fresh. If you’re in a pinch, portion it into freezer-safe containers and freeze for up to two months. Thaw overnight in the fridge for gentle reheating.
Reheating
Warm refrigerated servings in a skillet over low heat, stirring gently until hot. If you’re rushing, the microwave works, too—just cover and use medium power so the chicken stays moist and the squash doesn’t get mushy.
FAQs
Can I use chicken breast instead of thighs?
Absolutely! Chicken breast cooks a bit faster and is leaner, but it works just as well. Keep an eye out not to overcook, so the meat stays juicy and tender.
Is there a dairy-free option for the pesto?
Omit the parmesan cheese for a dairy-free pesto, or sub in a touch of nutritional yeast to mimic the savory flavor.
What should I do if my pesto turns out too thick?
If the pesto feels too dense, drizzle in more avocado oil or a splash of water, pulsing until it reaches a glossy, spoonable consistency.
Can I prepare Chicken Pesto Spaghetti Squash ahead of time?
Yes—roast the squash, make the pesto, and even cook the chicken up to a day ahead. Keep each component separate, then simply toss and warm everything right before serving for maximum freshness.
Is this recipe Whole30 compatible?
Yes, just omit the parmesan cheese in the pesto. The rest of the ingredients are all Whole30-friendly, so you can enjoy Chicken Pesto Spaghetti Squash during your reset!
Final Thoughts
With its dazzling color, bold flavors, and total crowd-pleaser appeal, Chicken Pesto Spaghetti Squash deserves to be in everyone’s recipe rotation. If you crave something hearty yet light—and secretly want extra veggies—this dish is made for you. I can’t wait for you to try it and make it your own!
PrintChicken Pesto Spaghetti Squash Recipe
This Chicken Pesto Spaghetti Squash recipe combines tender spaghetti squash strands with flavorful homemade basil pesto and savory chicken for a delicious and satisfying meal.
- Prep Time: 20 minutes
- Cook Time: 40 minutes
- Total Time: 1 hour
- Yield: 4 servings 1x
- Category: Main Dish
- Method: Roasting, Sautéing
- Cuisine: Italian
- Diet: Vegetarian
Ingredients
Roasted Spaghetti Squash:
- 1 large roasted spaghetti squash
- 2 Tbsp avocado oil
- 1 pinch sea salt
Chicken:
- 1 Tbsp avocado oil
- 1 1/2 lbs boneless chicken thighs (chopped)
- 1 tsp paprika
- 1 tsp garlic powder
- 1/4 tsp sea salt (to taste)
Pesto Sauce:
- 2 cups fresh basil leaves
- 2/3 cup pumpkin seeds
- 2/3 cup avocado oil
- 1 large clove garlic
- 1 cup parmesan (optional, omit for whole30)
Instructions
- Roast the spaghetti squash: Follow the instructions for roasting the spaghetti squash until tender.
- Prepare the pesto sauce: In a food processor, combine basil, pumpkin seeds, garlic, and parmesan. While processing, slowly add avocado oil until desired consistency.
- Cook the chicken: In a skillet, brown chopped chicken with paprika, garlic powder, and sea salt until fully cooked.
- Combine: Toss the roasted spaghetti squash with pesto sauce and cooked chicken. Adjust seasoning with sea salt to taste.
Notes
- You can omit parmesan for a Whole30 compliant version.
- Pumpkin seeds add a unique twist to the traditional pesto.
Nutrition
- Serving Size: 1 serving
- Calories: 480
- Sugar: 4g
- Sodium: 610mg
- Fat: 35g
- Saturated Fat: 6g
- Unsaturated Fat: 24g
- Trans Fat: 0g
- Carbohydrates: 15g
- Fiber: 4g
- Protein: 30g
- Cholesterol: 115mg
Keywords: Chicken Pesto Spaghetti Squash, Pesto Chicken, Spaghetti Squash Recipe