01 - Preheat oven to 400°F. Lightly grease a baking dish large enough to accommodate the chicken breasts in a single layer.
02 - Pat chicken breasts dry with paper towels. Season both sides generously with salt and pepper. Arrange seasoned chicken in the prepared baking dish. Drizzle with 1 tablespoon olive oil.
03 - In a medium mixing bowl, combine ricotta, Parmesan, mozzarella, minced garlic, parsley, basil, onion powder, lemon zest, and chili flakes if using. Season with a small amount of salt and pepper. Mix thoroughly until all ingredients are evenly incorporated.
04 - Spread the ricotta mixture generously over each chicken breast, ensuring the tops are evenly covered.
05 - Drizzle the remaining tablespoon of olive oil over the ricotta-topped chicken breasts.
06 - Bake uncovered for 25 to 30 minutes, or until chicken reaches an internal temperature of 165°F and the topping is golden brown and bubbly.
07 - Remove from oven and let chicken rest for 5 minutes. Garnish with additional fresh parsley and serve hot.