Place each chicken breast on a piece of heavy duty foil. Season the chicken with salt and pepper to taste. Add the potatoes, and 2 pieces of green bell pepper. Drizzle with 3 tablespoons of barbeque sauce.
Fold the sides of the foil up and seal the edges. Place packets over hot coals or a hot grill and cook for 20-25 minutes, until the chicken is cooked through and no longer pink, and the vegetables are fork tender.