01 - In a large mixing bowl, whisk together the gochujang, soy sauce, rice vinegar, honey, minced garlic, grated ginger, sesame oil, and black pepper until smooth and well combined.
02 - Add the chicken pieces to the marinade and toss to coat evenly. Let marinate for at least 20 minutes at room temperature, or up to 2 hours in the refrigerator for deeper flavor penetration.
03 - Heat a large skillet or non-stick pan over medium-high heat. Add the marinated chicken along with any excess marinade and cook for 6 to 8 minutes per side, until the chicken is fully cooked through and slightly caramelized.
04 - Remove from heat and transfer to a serving platter. Sprinkle with toasted sesame seeds and sliced green onions. Serve hot alongside steamed rice or in crisp lettuce wraps.