Combine all sauce ingredients in a bowl and reserve about ¾ cup for basting or serving
Place your chicken breasts in a freezer bag or Tupperware for marinating and pour the sauce over the top, then place in the fridge for at least 2 hours
Set your grill to your desired temperature (225F for smoking, 350F for grilling)
Place the chicken directly on the grates
Allow to cook for 1 hour if smoking, otherwise turn every 2-3 minutes for the first 8-12 minutes if grilling until it reaches an internal temperature of 165F.