01 - Combine chicken cubes with vegetable oil, garlic powder, soy sauce, black pepper, and salt in a bowl. Marinate for at least 10 minutes or refrigerate up to 2 hours for enhanced flavor.
02 - Thread marinated chicken pieces onto skewers. If using wooden skewers, soak in water for 20 minutes prior to use to prevent burning during grilling.
03 - Heat grill or grill pan to medium-high temperature, approximately 375-400°F.
04 - Place skewers on grill and cook for 10-15 minutes, turning every 3-4 minutes, until chicken reaches internal temperature of 165°F and develops light char marks.
05 - While chicken grills, whisk together mayonnaise, sweet chili sauce, sriracha, honey, and rice vinegar in a small bowl until smooth and fully incorporated.
06 - Transfer cooked skewers to serving plate. Brush generously with Bang Bang sauce or drizzle over top. Sprinkle with sesame seeds, scallions, and cilantro. Serve immediately.