01 - Preheat the oven to 375°F. Lightly grease a 9x13-inch baking dish.
02 - Pat the chicken breasts dry with paper towels and arrange them in a single layer in the baking dish.
03 - In a medium bowl, mix together the mayonnaise, parmesan cheese, garlic powder, onion powder, black pepper, salt, and Italian herbs (if using) until smooth.
04 - Evenly spread the creamy mixture over the top of each chicken breast, covering them completely.
05 - Bake for 25 to 30 minutes, or until the chicken is cooked through (internal temperature should reach 165°F) and the topping is golden brown.
06 - Optionally, broil for 2 to 3 minutes at the end for extra browning.
07 - Remove from the oven and let rest for 5 minutes. Garnish with fresh parsley before serving.