01 - In a large mixing bowl, combine the soy sauce, sesame oil, rice vinegar, minced garlic, grated ginger, and black pepper. Add the chicken pieces and toss thoroughly to ensure even coating. Cover and refrigerate for at least 15 minutes, or up to 2 hours for deeper flavor penetration.
02 - If using bamboo skewers, submerge them in water for at least 20 minutes to prevent burning during grilling.
03 - In a small bowl, whisk together the mayonnaise, sweet chili sauce, Sriracha, honey, and lime juice until smooth and well blended. Set aside at room temperature.
04 - Remove the chicken from the marinade, allowing excess to drip off. Thread the pieces evenly onto the prepared skewers, leaving a small gap between each piece for even cooking.
05 - Preheat a grill or grill pan over medium-high heat. Place the skewers on the grill and cook for 6 to 8 minutes per side, turning once, until the chicken is cooked through and develops a nice char. Internal temperature should reach 165°F.
06 - Transfer the grilled skewers to a serving platter. Drizzle generously with the Bang Bang sauce, then sprinkle with sesame seeds and sliced spring onion. Serve immediately with any remaining sauce on the side.