Add all the ingredients except for the chicken and cooking spray to a bowl and whisk to combine to make the barbecue sauce. Reserve 1/2 cup of the sauce to a bowl. Add the chicken to the remaining sauce and let sit for 5 minutes.
Preheat a grill or a grill pan over medium-high heat. Coat with non-stick cooking spray.
Place the chicken on the grill and cook for 5 minutes on each side or until cooked through. 2 Minutes before you finish cooking the chicken, brush each piece with some of the reserved barbecue sauce. Remove from grill and serve.