1Preheat the oven to 350 degrees. Place a rack in a baking pan and spray with nonstick cooking spray; set aside.
2Cut chicken lenghwise into 3 thin sections, making 6 total. Sprinkle with salt and pepper to taste.
In a medium bowl combine hot sauce and melted butter; mix. Place cornflake crumbs in another medium bowl.
Dip chicken pieces in butter mixture, then in cornflake crumbs, covering both sides. You may have to use a spoon to spread the butter mixture over the surface of the chicken, covering both sides before dipping in crumbs.
3Place onto rack in pan. Cook 30 minutes, checking at 25 minutes to see if chicken is done. Don't overbake.
4Place a lettuce leaf, chicken piece, then ranch dressing on bottom half of a hamburger bun and top with the other half. Makes 6 sandwiches.