01 - In a large bowl, combine gochujang, soy sauce, sesame oil, honey, rice vinegar, garlic, ginger, brown sugar, and black pepper. Whisk thoroughly until the brown sugar dissolves completely and the mixture forms a smooth, uniform glaze.
02 - Add chicken pieces to the bowl, tossing to ensure every piece is evenly coated. Cover and refrigerate for at least 15 minutes, or up to 2 hours for deeper flavor penetration. The proteins will absorb the spicy-sweet seasoning during this time.
03 - Place a large skillet or grill pan over medium-high heat for 2–3 minutes. The surface should be hot enough to sear the chicken immediately, creating a caramelized exterior while locking in moisture.
04 - Remove chicken from marinade, allowing excess to drip off. Arrange in a single layer without overcrowding the pan. Cook for 5–7 minutes per side, turning occasionally, until the chicken develops a rich, charred glaze and reaches an internal temperature of 165°F.
05 - Pour any remaining marinade into the pan with the chicken. Reduce heat to medium and simmer for 2–3 minutes, stirring constantly, until the sauce thickens into a glossy coating that clings to the chicken pieces.
06 - Transfer the glazed chicken to a serving platter, spooning any remaining sauce over the top. Sprinkle generously with sliced green onions and sesame seeds for color, texture, and nutty flavor.
07 - Serve immediately while hot, accompanied by steamed white rice, kimchi, or pickled vegetables to balance the rich, spicy-sweet profile of the dish.