Start by placing the chicken breasts in a large mixing bowl or a resealable plastic bag. Pour in the Italian salad dressing, ensuring all sides are well-coated. Allow the chicken to marinate in the refrigerator for at least 30 minutes, or up to 4 hours for maximum flavor.
In a separate bowl, mix together the melted salted butter, 1/4 cup of the Parmesan cheese, panko breadcrumbs, garlic powder, salt, and black pepper. This mixture will form the crunchy topping that makes this dish so exciting.
While the chicken marinates, preheat your oven to 375°F (190°C). This temperature is perfect for baking the chicken and ensuring the crust turns golden brown.
Remove the chicken from the marinade and shake off any excess dressing. Place the chicken breasts in a baking dish. Spread a layer of ranch dressing evenly over each breast, followed by a slice of provolone cheese. Next, generously sprinkle the panko mixture over the top, pressing it down slightly to adhere.
Place the baking dish in the preheated oven and bake for 25-30 minutes, or until the chicken is cooked through (internal temperature should reach 165°F). For an extra crispy top, you can broil it for an additional 2-3 minutes at the end of the baking time.
Once cooked, remove the chicken from the oven and let it rest for a few minutes. Garnish with freshly chopped parsley for a pop of color and serve hot with your favorite sides.