01 -
Set the oven to preheat at 375°F (190°C).
02 -
Place the boneless chicken breast halves evenly spaced in a baking dish, ensuring they do not overlap.
03 -
In a mixing bowl, thoroughly combine mayonnaise, Parmesan cheese, salt, ground black pepper, and garlic powder until consistent.
04 -
Evenly coat the chicken breasts with the prepared mayonnaise-Parmesan mixture using a spatula or spoon.
05 -
Place the baking dish in the preheated oven and bake for approximately 45 minutes, ensuring the topping turns golden brown and the chicken registers an internal temperature of 165°F (74°C).