01 -
Preheat oven to 200°C. Lightly coat a baking sheet with nonstick cooking spray or reduced-fat oil.
02 -
Pat chicken breasts dry. Season both sides with salt and black pepper, then drizzle evenly with olive oil.
03 -
Brush each chicken breast generously with barbecue sauce, setting aside some sauce for later basting.
04 -
Distribute chopped bell peppers and sliced red onion evenly around the chicken breasts on the prepared baking sheet.
05 -
Bake in preheated oven for 25 to 30 minutes or until chicken reaches an internal temperature of 75°C, basting with reserved barbecue sauce halfway through, if desired.
06 -
Plate chicken with roasted vegetables and drizzle with additional barbecue sauce to taste. Serve hot.