Follow these simple steps to create your very own Sheet Pan Pesto Chicken:

1. Preheat the Oven: Preheat your oven to 400°F (200°C).
2. Prepare the Chicken: Place the chicken breasts in a large bowl and add the pesto sauce. Toss to coat evenly and let it marinate for about 10 minutes.
3. Prepare the Vegetables: While the chicken is marinating, prepare the vegetables. In another bowl, combine the cherry tomatoes, red bell pepper, zucchini, and red onion. Drizzle with olive oil, and season with salt and pepper. Toss to coat.
4. Arrange on Sheet Pan: Line a large baking sheet with parchment paper for easier cleanup. Place the marinated chicken breasts in the center of the sheet pan. Arrange the vegetables around the chicken.
5. Bake: Transfer the sheet pan to the preheated oven and bake for 25-30 minutes, or until the chicken is cooked through and reaches an internal temperature of 165°F (75°C).
6. Broil (Optional): For a crispy finish, switch the oven to broil for the last 2-3 minutes of cooking, keeping a close eye to prevent burning.
7. Garnish and Serve: Remove from the oven and let it rest for a few minutes. Garnish with fresh basil leaves if desired.

These steps will guide you in creating this incredible dish effortlessly, leaving you with more time to enjoy the company of your family and friends.