01 - Preheat oven to 375°F. Lightly coat a 9x13-inch baking dish with cooking spray or a thin layer of oil.
02 - Thoroughly pat chicken breasts dry with paper towels. Arrange in a single layer within the prepared baking dish, ensuring pieces do not overlap.
03 - In a medium bowl, combine mayonnaise, parmesan cheese, garlic powder, onion powder, black pepper, salt, and Italian herbs. Whisk until completely smooth and well incorporated.
04 - Spread the creamy mixture evenly over the top surface of each chicken breast, ensuring complete coverage. Use the back of a spoon for even distribution.
05 - Bake for 25-30 minutes until chicken reaches an internal temperature of 165°F when tested with a meat thermometer, and the topping achieves golden-brown coloration.
06 - For additional browning and crisping, switch oven to broil setting and cook for 2-3 minutes. Watch closely to prevent burning.
07 - Remove from oven and let chicken rest for 5 minutes to allow juices to redistribute. Sprinkle with fresh parsley before serving.