Sweet Baby Ray's BBQ Chicken

4-6 chicken breasts (I used 6 frozen ones without thawing, there is enough sauce to do 8 or even a whole 3 lb bag)
1 bottle Sweet Baby Ray's sauce - the smaller bottle
1/4 cup vinegar
1 cup water, more or less
1 tsp red pepper flakes
1/4 cup packed brown sugar
1 tsp garlic powder

Place chicken breasts in the crock pot.   Pour out the bbq sauce into a large bowl.  Rinse out the bottle with some water - 1/2 cup approx.  If there is still sauce in the bottle, add a little more water and swish around to get it all. 
Add the vinegar, pepper flakes, brown sugar and garlic powder to the bbq sauce and stir until well mixed.
Pour over the chicken breasts and rearrange them to make sure they are all coated.
Cook on low for 4-6 hours- a little longer if they were frozen.

Serve with the extra sauce on the side if desired.