Preheat the oven to 375°F (190°C) or preheat your grill to medium-high heat.
In a small mixing bowl, combine the mayonnaise, grated Parmesan cheese, seasoning salt, black pepper, and garlic powder. Mix well.

Place the chicken breasts in a large resealable bag or in a shallow dish. Pour the mayonnaise mixture over the chicken, making sure that each piece is fully coated. Seal the bag or cover the dish and refrigerate for at least 30 minutes, or up to 24 hours, to allow the chicken to marinate.
If baking, place the chicken breasts on a baking sheet lined with foil. Bake for 25-30 minutes or until the internal temperature of the chicken reaches 165°F (74°C).
If grilling, place the chicken on the grill and cook for about 6-8 minutes on each side or until the internal temperature of the chicken reaches 165°F (74°C).
Once the chicken is cooked, remove it from the oven or grill and let it rest for a few minutes before slicing and serving.
Serve hot and enjoy!
Notes
Optional: you can add a sprinkle of extra Parmesan cheese and parsley on top of the chicken before serving for a nice touch of color and flavor.
Note: This recipe can be modified by adding other seasonings to taste or using other types of cheese. You can also use Greek yogurt instead of mayonnaise for a healthier option.

Preheat the oven to 375°F (190°C) or preheat your grill to medium-high heat.
In a small mixing bowl, combine the mayonnaise, grated Parmesan cheese, seasoning salt, black pepper, and garlic powder. Mix well.

Place the chicken breasts in a large resealable bag or in a shallow dish. Pour the mayonnaise mixture over the chicken, making sure that each piece is fully coated. Seal the bag or cover the dish and refrigerate for at least 30 minutes, or up to 24 hours, to allow the chicken to marinate.
If baking, place the chicken breasts on a baking sheet lined with foil. Bake for 25-30 minutes or until the internal temperature of the chicken reaches 165°F (74°C).
If grilling, place the chicken on the grill and cook for about 6-8 minutes on each side or until the internal temperature of the chicken reaches 165°F (74°C).
Once the chicken is cooked, remove it from the oven or grill and let it rest for a few minutes before slicing and serving.
Serve hot and enjoy!
Notes
Optional: you can add a sprinkle of extra Parmesan cheese and parsley on top of the chicken before serving for a nice touch of color and flavor.
Note: This recipe can be modified by adding other seasonings to taste or using other types of cheese. You can also use Greek yogurt instead of mayonnaise for a healthier option.