Step 1: Preheat and Prep

1. Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish with cooking spray or a thin layer of olive oil.
2. Pat the chicken breasts dry with paper towels and place them in the prepared baking dish.

Step 2: Season the Chicken

1. Drizzle the chicken breasts with olive oil, then sprinkle garlic powder, smoked paprika, thyme, salt, and black pepper evenly over both sides.

Step 3: Make the Cream Cheese Topping

1. In a medium mixing bowl, combine the softened cream cheese, Parmesan cheese, mozzarella cheese, mayonnaise (or Greek yogurt), minced garlic, and parsley. Mix well until smooth and creamy.

Step 4: Assemble the Dish

1. Spread the cream cheese mixture evenly over the tops of the chicken breasts, using a spatula to create an even layer.
2. If using optional toppings like crumbled bacon or diced spinach, sprinkle them over the cream cheese layer.

Step 5: Bake the Chicken

1. Cover the baking dish with aluminum foil and bake in the preheated oven for 20 minutes.
2. Remove the foil and continue baking for an additional 10-15 minutes, or until the chicken reaches an internal temperature of 165°F (75°C) and the cheese topping is golden and bubbly.

Step 6: Garnish and Serve

1. Remove the chicken from the oven and let it rest for 5 minutes. Garnish with extra parsley for a pop of color.
2. Serve warm with your favorite sides.