Pound the chicken breasts to a ½ inch thickness. This ensures even cooking and tenderness.
Marinate the chicken in Italian dressing for at least 30 minutes, or overnight in the refrigerator. This not only enhances flavor but also helps tenderize the meat.
When you're ready to cook, heat olive oil in a cast iron skillet over medium-high heat. You want it hot enough to sear the chicken nicely.
Using tongs, add the marinated chicken to the skillet, searing for about 5 minutes per side, or until cooked through. Look for a golden brown exterior to indicate doneness.
In a separate bowl, combine ¼ cup of the parmesan cheese with all of the ranch dressing. Stir until smooth and creamy.
Spoon the ranch mixture over the seared chicken breasts, spreading it evenly.
Place a slice of provolone cheese on top of each chicken breast, allowing it to melt and enhance the flavor.
Carefully transfer the skillet to the oven and broil on low for 3 to 5 minutes. Keep a close eye, as broilers can vary in intensity.
While broiling, mix the melted butter, panko breadcrumbs, garlic powder, salt, pepper, and the remaining ¼ cup of parmesan cheese in a bowl. This will create the crispy topping.
Once the chicken is broiled and the cheese is bubbly, remove the skillet from the oven. Carefully sprinkle the breadcrumb mixture over the top, ensuring even coverage.
Return the skillet to the oven and broil again until the topping is golden brown and crisp. Remove from oven and let it rest briefly before serving.
Serve hot, garnished with optional parsley, and enjoy!