Step 1: Preheat the Oven

1. Set Up the Oven: Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish or line it with parchment paper for easy cleanup.

Step 2: Prepare the Chicken

1. Season the Chicken: Pat the chicken breasts dry with paper towels. Season both sides with black pepper and garlic powder. For added flavor, sprinkle with Italian seasoning if desired.

Step 3: Make the Sauce

1. Mix the Sauce: In a medium bowl, combine the Caesar dressing, sour cream, and ¾ cup of the grated Parmesan cheese. Stir until smooth and well combined.

Step 4: Assemble the Dish

1. Spread the Sauce: Place the chicken breasts in the prepared baking dish. Spoon the Caesar sauce over the top of each breast, spreading it evenly to coat.
2. Prepare the Topping: In a small bowl, mix the panko breadcrumbs with the melted butter and the remaining ¼ cup of Parmesan cheese. Sprinkle the mixture evenly over the chicken.

Step 5: Bake the Chicken

1. Bake: Place the dish in the preheated oven and bake for 25-30 minutes, or until the chicken is cooked through and the topping is golden brown. Use a meat thermometer to ensure the chicken reaches an internal temperature of 165°F (74°C).
2. Broil (Optional): For an extra-crispy topping, broil the dish for 1-2 minutes, keeping a close eye to avoid burning.

Step 6: Garnish and Serve

1. Add Fresh Herbs: Sprinkle chopped parsley over the top for a fresh, vibrant finish.
2. Serve: Plate the chicken with your choice of sides, spooning extra sauce from the baking dish over the top.