Preheat oven to 375°F and spray a 9x13-inch baking dish with nonstick cooking spray.
Place the chicken pieces in the prepared baking dish and season with Italian seasoning, garlic powder, salt, and pepper.
Pour the marinara sauce over the chicken and stir to coat all pieces evenly.
Sprinkle mozzarella cheese and Parmesan cheese evenly over the top of the chicken and sauce.
Bake uncovered for 35-40 minutes until chicken is cooked through and cheese is melted and bubbly.
Let stand for 5 minutes, garnish with fresh basil if desired, and serve over pasta or with crusty bread.