Put the vegetable oil, vinegar, hot sauce, powdered ranch dressing mix, paprika, garlic powder, kosher salt, black pepper, and cayenne pepper in a bowl and whisk to combine.
Flatten the chicken breasts to an even thickness and place them in a gallon-sized storage bag. Pour the marinade over the chicken, seal the bag, and turn it to coat the chicken. Place in the fridge to marinate for one hour.
Preheat the grill to medium heat. Grease the grill grates, remove the chicken from the marinade, and discard the remaining marinade. Grill the chicken for 13-16 minutes, flipping halfway through, until it reaches an internal temperature of 165˚F.
Combine the melted butter and 2 tablespoons of hot sauce. Brush on the grilled chicken.
Video
Notes
Store leftovers in an airtight container in the fridge for 3-4 days or in the freezer for 1-2 months.Nutrition calculated using 1/4 of the marinade, since most of it is discarded.