Marinate the chicken in 1 ½ cups of Italian Dressing for at least 2-4 hours or overnight.
Remove the chicken breast from the Italian dressing. Heat a cast iron grill or your outdoor grill to medium-high heat.
Grill the chicken for 6 minutes on each side or until fully cooked. (165°F)
Remove the chicken from the grill and allow the chicken to rest.
While the chicken is resting, prepare the ranch spread and parmesan topping.
For the ranch spread: In a small bowl, combine the grated parmesan cheese and ranch dressing. Mix until fully combined, set aside.
For the parmesan topping: In another small bowl, combine the panko bread crumbs, garlic salt, grated parmesan cheese, and melted butter. Mix until fully combined and the bread crumbs are moistened.
Position an oven rack in the center of your oven and preheat the oven to HIGH broil.
Transfer the grilled chicken to an oven-safe dish. Spread 2 tablespoons of the ranch spread over each grilled chicken.
Evenly divide and sprinkle the shredded provolone over each grilled chicken breast.
Evenly divide and top each grilled chicken breast with the panko and parmesan topping.
Transfer the oven-safe dish to the preheated oven and broil until the cheese melts and the parmesan topping begins to turn light brown.
Garnish with fresh parsley and serve. Enjoy!