01 -
In a mixing bowl, whisk together ketchup, brown sugar, soy sauce, pineapple juice, 2 tablespoons olive oil, rice vinegar, minced garlic, ginger, and sesame oil. Add black pepper and season with salt as needed.
02 -
Place chicken cubes in a large resealable bag. Reserve 120 ml of the marinade in the refrigerator. Pour remaining marinade over the chicken, seal bag, and refrigerate for 1 hour. Meanwhile, soak 10 wooden skewers in water for 1 hour to prevent burning.
03 -
Preheat grill to medium heat (200°C). Drizzle remaining 2 tablespoons olive oil over red onion, green pepper, and pineapple; toss to coat. Season the vegetables lightly with salt and pepper.
04 -
Thread red onion, green pepper, pineapple, and marinated chicken alternately onto soaked skewers, dividing ingredients evenly.
05 -
Brush grill grates with olive oil. Place skewers on the grill and cook for 5 minutes. Brush the kebabs with half of the reserved marinade, then rotate and brush with the remaining marinade.
06 -
Grill for an additional 4 minutes, or until chicken registers 75°C in the center. Remove from heat and serve immediately while warm.