Preheat your oven to 375°F (190°C) and grease a baking dish with a bit of olive oil to prevent the chicken from sticking.

Place the chicken breasts on a clean surface and season both sides with salt and black pepper. This basic seasoning will enhance the flavor of the chicken and allow the creamy sauce to shine.

In a mixing bowl, combine the softened cream cheese, Parmesan cheese, mayonnaise (if using), garlic powder, onion powder, Italian seasoning, and paprika. Use a spoon or spatula to mix everything until smooth and well-blended. This mixture will coat the chicken, adding richness and flavor.

Taste the mixture and adjust the seasoning with more salt, pepper, or garlic if desired.

Place the chicken breasts in the prepared baking dish in a single layer. Spread the cream cheese mixture evenly over each chicken breast, making sure they are fully coated. The thick layer of cream cheese mixture will keep the chicken moist and infuse it with flavor as it bakes.

For an even cheesier topping, sprinkle a bit of extra Parmesan cheese on top of the cream cheese-coated chicken.

Place the baking dish in the preheated oven and bake for 30-35 minutes, or until the chicken reaches an internal temperature of 165°F (74°C) and is cooked through. The top should be golden and slightly bubbly.

If you prefer a deeper golden-brown color, turn on the broiler for the last 2-3 minutes of baking. Keep a close eye on it to prevent burning.

Remove the chicken from the oven and sprinkle chopped fresh parsley over the top for a pop of color and freshness.

Serve the baked cream cheese chicken hot, alongside your favorite sides like pasta, rice, or steamed vegetables. Make sure to spoon some of the creamy sauce over the chicken and any sides for added flavor.