In a slow cooker, add chicken breasts i na single layer and sprinkle them with brown sugar, garlic powder, smoked paprika, salt and pepper. Then add apple cider vinegar and BBQ sauce on top.
Cook on low heat for 5 hours or on high heat for 2.5 hours. I prefer low heat if possible because chicken comes out more tender.
After shred chicken with 2 forks right in the crockpot and stir.
Serve on buns with a side of coleslaw, pickles, chips and corn on the cob.
Notes
Store: Refrigerate in an airtight container for up to 5 days.