Combine marinade ingredients in a bowl and add chicken. Toss to coat and let marinate while preparing the BBQ sauce.
Combine all ingredients for the BBQ sauce in a medium saucepot and stir until combined. Place over medium heat and let simmer until sugars dissolve and sauce begins to thicken.
On skewers place marinated chicken, pepper pieces, red onion and pineapple chunks. Drizzle with olive oil and season with salt and pepper.
Over medium-high heat, grill skewers for a few minutes on each side. While cooking, brush with BBQ sauce.
Serve with BUSH'S Black Bean Fiesta Grillin' Beans