01 - In a mixing bowl, whisk together soy sauce, sesame oil, rice vinegar, honey, minced garlic, grated ginger, and black pepper until combined. Add chicken pieces and toss thoroughly to coat. Cover and refrigerate for at least 1 hour, or up to 4 hours.
02 - Preheat grill or grill pan to medium-high heat.
03 - Thread marinated chicken onto soaked wooden skewers or metal skewers, distributing pieces evenly.
04 - Place skewers on the grill and cook for 5 to 7 minutes per side, turning once, until chicken is cooked through and develops light char marks.
05 - In a small saucepan over medium heat, combine honey, soy sauce, water, minced garlic, and chili flakes if using. Bring to a gentle simmer.
06 - Add cornstarch slurry to the saucepan, whisking continuously. Cook until sauce thickens, about 1 minute. Remove from heat.
07 - Arrange chicken skewers on a platter. Drizzle with honey garlic sauce and sprinkle with sesame seeds, green onions, and lime wedges as desired.