Combine all ingredients for the sauce in the slow cooker. Add the chicken, try to coat it well with the sauce.
Cook on high 3-4 hours, or until chicken is fully cooked all the way through. Then shred or cut up the chicken, and replace it in the Barbecue sauce in the pot; mix it all up so all the pieces are coated.
You can keep the slow cooker on low to keep the chicken warm for serving on hard rolls.