Preheat outdoor grill to medium heat. Season chicken breasts with salt and pepper and place on grill. Cook on the prepared grill about 8 minutes per side, or until no longer pink and juices run clear. Lightly spread olive oil on inside of buns and place on the top rack of grill. Cook for 2 minutes or until slightly toasted. Assemble chicken, cheese, avocado slices, lettuce, onion and tomato on toasted hamburger bun. Drizzle Litehouse® Jalapeno Ranch over the open sandwich. Serve with sides of your choice.