1Preheat your grill to medium-high heat.
Cut the chicken breast into bite-sized pieces.
Chop the red bell pepper, yellow bell pepper, and red onion into similar-sized pieces.
Thread the chicken, red bell pepper, yellow bell pepper, and red onion alternately onto skewers.
Brush the skewers generously with BBQ sauce.
Place the skewers on the grill and cook for about 10-15 minutes, turning occasionally, until the chicken is cooked through and the vegetables are tender.
Remove from the grill and let them rest for a few minutes before serving.
Serve the skewers with additional BBQ sauce on the side if desired.