BBQ Chicken, Bell Pepper and Pineapple Skewers

(2) boneless skinless chicken breasts 1 bell pepper (any color) 1/2 red onion 1 (20 oz.) can sliced pineapple 1/2 cup your favorite BBQ sauce (I used Bullseye), divided Salt and freshly ground black pepper Wooden or stainless steel skewers*