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 thigh pieces to the marinade, tossing to coat evenly. Allow the chicken to marinate for at least 20 minutes at room temperature, or cover and refrigerate for up to 2 hours for more pronounced flavor.
03 - Heat a large skillet or non-stick pan over medium-high heat. Add the marinated chicken along with any excess marinade. Cook for 6 to 8 minutes per side until the chicken is fully cooked through and develops a caramelized, slightly charred exterior.
04 - Remove the skillet from heat. Sprinkle with toasted sesame seeds and sliced green onions. Serve immediately alongside steamed white rice or tucked into crisp lettuce wraps.