Pound the chicken breasts to an even thickness for uniform cooking.
Season both sides of the chicken breasts with salt, pepper, garlic powder, and onion powder.
Heat the olive oil in a large oven-safe skillet over medium-high heat.
Add the chicken breasts to the skillet and cook for about 4-5 minutes on each side, or until golden brown.
Remove the chicken from the skillet and set aside.
Make the Parmesan Crust:
In a small bowl, mix together the grated Parmesan cheese, panko breadcrumbs, melted butter, garlic powder, and dried Italian seasoning until well combined.
Prepare the Ranch Spread:
In another small bowl, mix together the mayonnaise, grated Parmesan cheese, ranch dressing, and sour cream until smooth.
Assemble and Bake:
Spread a generous layer of the ranch spread over each chicken breast.
Top each chicken breast with the Parmesan crust mixture, pressing it down slightly to adhere.
Place the skillet with the chicken breasts in the preheated oven and bake for about 10-15 minutes, or until the chicken is cooked through and the crust is golden and crispy.
Serve:
Remove the chicken from the oven and let it rest for a few minutes before serving.
Garnish with fresh parsley or additional Parmesan cheese, if desired.