Whisk together the BBQ sauce, vinegar, sugar, and seasonings in a medium sized bowl.
Place chicken in crock pot and cover with barbecue sauce mixture.
Cook in crock pot on low for approximately four hours, until chicken is cooked thoroughly.
Shred the chicken and stir it into the sauce, mixing well.
Serve on onion rolls (or your favorite roll variety!), with a salad and macaroni, pasta salad, or cole slaw.
The barbecue chicken can be stored in a sealed container in the refrigerator for up to five days, and in the freezer for up to four months.