Preheat oven to 375°F (190°C). Lightly grease a 9x13 inch baking dish with cooking spray.

Pat the chicken breasts dry with a paper towel and season lightly with salt and pepper on both sides. Place them in the prepared baking dish.

In a small bowl, whisk together the mayonnaise, grated parmesan cheese, minced garlic, lemon juice, Worcestershire sauce, and Dijon mustard until well combined.

Spoon the creamy sauce mixture evenly over each chicken breast, ensuring the tops are completely covered.

Sprinkle the shredded parmesan cheese generously over the top of the sauce-coated chicken.

Bake for 20-30 minutes, or until the chicken is cooked through and reaches an internal temperature of 165°F (74°C).

Optional: Turn the oven to broil for 2-3 minutes to brown the cheese topping until golden and bubbly. Watch closely to prevent burning.

Remove from oven and let rest for 5 minutes. Garnish with fresh chopped parsley before serving.