Lightly spray a 9x13" casserole dish with non stick cooking spray.
Add the chicken to the dish, in an even layer, and season it liberally with salt & pepper. Sprinkle the garlic powder & smoked paprika evenly out over the chicken.
2 lbs boneless, skinless chicken breasts, salt & pepper, 1/2 tsp garlic powder, 1/4 tsp smoked paprika
Evenly spread the chopped veggies out over the seasoned chicken.
1 medium zucchini, 1 medium yellow squash, 1 medium white onion
Spoon the pesto sauce out over the veggies in dollops.
1/2 cup pesto sauce
Sprinkle both cheeses evenly out over the casserole dish.
1 cup shredded mozzarella cheese, 1/2 cup shredded Parmesan cheese
Bake the dish at 375° for 45 minutes, or until the cheese is golden brown, veggies roasted, and the chicken is cooked through.
Carefully remove the dish from the oven, and let it rest for 2-3 minutes.
Serve & enjoy!