In a small saucepan over low heat, combine barbecue sauce, brown sugar, and onion powder. Simmer for 30 minutes stirring occasionally.
Meanwhile, season the chicken with the BBQ seasoning and then wrap chicken breast with one to two slices bacon each. Set aside 3/4 cup sauce mixture. Brush remaining sauce mixture over chicken.
Place chicken on the grill not directly over flames to prevent flare-ups with a medium-high heat. Grill for 25-30 minutes, flipping twice until nearly done. Brush chicken well with reserved sauce mixture.
Cook until chicken juices run clear and sauce is caramelized. Always cook chicken to 165 degrees.