Preheat your oven: Heat your oven to 375 degrees Fahrenheit and line a baking sheet with parchment paper or lightly grease it.
Prepare the coating: In a small bowl, combine the mayonnaise, soul seasoning, and onion powder, stirring until smooth and well mixed.
Coat the chicken: Pat the chicken breasts dry with paper towels, then generously spread the mayo mixture over all sides of each breast, ensuring complete coverage.
Add the cheese crust: Sprinkle the freshly grated Parmesan cheese evenly over the mayo-coated chicken, pressing gently so it adheres.
Bake until done: Place the chicken on the prepared baking sheet and bake for 25-30 minutes until the internal temperature reaches 165 degrees Fahrenheit when measured with a meat thermometer at the thickest part.
Remove from oven: Carefully take the baking sheet out of the oven and let the chicken rest for 3-5 minutes before plating.
Transfer to plate: Use a spatula to gently lift each breast onto your serving plate, preserving the crispy Parmesan crust.
Garnish and serve: Top with fresh parsley if desired, and serve immediately while the chicken is warm and juicy.