Preheat your grill to medium-high heat, around 400°F (200°C). If using wooden skewers, soak them for about 30 minutes.

In a mixing bowl, combine cubed chicken, pineapple chunks, bell peppers, and red onion. Toss gently.

Thread chicken, pineapple, and vegetables onto soaked skewers, alternating them.

In a separate bowl, whisk together barbecue sauce, olive oil, garlic powder, onion powder, salt, and black pepper.

Generously coat kabobs with the marinade and allow them to sit for at least 15 minutes.

Grill kabobs for about 10-15 minutes, turning occasionally until chicken reaches 165°F.

Remove kabobs from grill and let rest for a few minutes before serving.