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 the chicken marinate for at least 20 minutes at room temperature, or cover and refrigerate for up to 2 hours 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 nicely caramelized on the outside.
04 - Remove the skillet from heat. Sprinkle with toasted sesame seeds and sliced green onions. Serve immediately alongside steamed rice or in crisp lettuce wraps.