Preheat the grill and lightly oil the grates.
If you are using wooden skewers, soak them in water for at least 10 to 15 minutes before skewering so they don't burn as much.
Add all ingredients for the sauce to a blender. Blend until combined.
Cut chicken into 3/4-inch bite-sized pieces. Cut bacon into 3/4-inch strips.
Thread bacon (in a "C" shape, skewering through both ends), chicken, peppers, and onion onto the skewers, alternating as you go.
Add skewers to the grill and cook, turning every few minutes, for 10 minutes. Baste the skewers with BBQ on all sides. Continue to baste and turn the skewers every minute or so to caramlize.
The chicken is cooked through when an internal thermometer registers 165˚F. The bacon should be nice and crispy at this point.
Remove from the grill and sprinkle with freshly chopped parsley.