Step 1: Prepare the Chicken

1. Flatten the chicken: Place the chicken breasts between two pieces of plastic wrap or parchment paper. Use a meat mallet or rolling pin to gently pound them to an even thickness of about ½ inch. This ensures even cooking.
2. Season the chicken: In a small bowl, mix garlic powder, onion powder, smoked paprika, Italian seasoning, salt, and pepper. Rub this mixture evenly onto both sides of the chicken breasts.
3. Cook the chicken: Heat 2 tablespoons of olive oil in a large skillet or grill pan over medium-high heat. Cook the chicken for 5–6 minutes per side, or until the internal temperature reaches 165°F (74°C). Remove from the skillet and place the chicken on a baking sheet lined with parchment paper.

Step 2: Make the Parmesan Ranch Sauce

1. Combine the ingredients: In a medium bowl, whisk together ranch dressing, grated Parmesan cheese, mayonnaise, garlic powder, and Dijon mustard until smooth. Adjust seasoning to taste if needed.
2. Spread the sauce: Generously spread the Parmesan Ranch sauce over the top of each chicken breast, ensuring an even layer.

Step 3: Prepare the Parmesan Crust Topping

1. Mix the topping: In a small bowl, combine shredded Parmesan cheese, shredded mozzarella cheese, Panko breadcrumbs, melted butter, and Italian seasoning. Stir until well combined and crumbly.
2. Add the topping: Spoon the Parmesan crust mixture on top of the Parmesan Ranch sauce, gently pressing it down so it adheres to the chicken.

Step 4: Bake and Broil

1. Bake the chicken: Preheat your oven to 400°F (200°C). Place the baking sheet with the chicken in the oven and bake for 8–10 minutes, or until the cheese is melted and bubbly.
2. Broil for a golden crust: Turn on the broiler for the last 2–3 minutes of cooking to achieve a crispy, golden-brown crust. Keep a close eye to prevent burning.

Step 5: Serve

1. Garnish and enjoy: Remove the chicken from the oven and let it rest for 2–3 minutes. Garnish with freshly chopped parsley and serve with lemon wedges, if desired. Pair with your favorite sides for a complete meal.