Add all BBQ sauce ingredients to a small bowl. Stir together until well combined. Set aside until you're ready to use.
Brush chicken with olive oil and season with salt and pepper. Add chicken to grill.
Grill chicken until you can easily flip it without any sticking. (Usually in 3 to 5 minutes.) Flip the chicken and brush 1/3 of the sauce over top. Reduce heat to medium.
Grill for another 3 to 5 minutes. Flip the chicken and brush another 1/3 sauce over the top.
Flip chicken one final time. Brush remaining sauce on top and let it grill for another 3 or so minutes. Chicken should be cooked through when done. (Grilling time can vary based on how hot your grill gets and the thickness of the chicken.)
Make sure you're using a clean brush or spoon when adding sauce to the chicken as it grills. You do not want to have any contamination issues so don't let a utensil that touched raw chicken then be used on cooked chicken. You also don't want to dip a utensil that touched raw chicken into your bbq sauce.To shorten your grilling time, slice your chicken horizontally to create thin cutlets before placing on the grill. These cutlets will cook faster than thick breasts!