Preheat oven to 400°F. Pound out chicken breasts to flatten. Season with pepper.

Grill chicken until no long pink (either on a grill or in a pan for about 5 minutes on both sides) and place on baking sheet covered with foil.

Top each chicken breast with one tablespoon bar-b-que sauce, 1/4 c. cheese, 1/4 c. tomatoes, green onions and one tablespoon of bacon bits. Place in oven and bake until cheese is melted (about 5 minutes).