01 - In a large mixing bowl, whisk together gochujang, soy sauce, honey, rice vinegar, sesame oil, minced garlic, and grated ginger until smooth and well combined.
02 - Add the chicken thigh pieces to the marinade and toss thoroughly to ensure even coating. Allow the chicken to rest for at least 10 minutes at room temperature, or refrigerate for up to 2 hours for a more pronounced flavor.
03 - Preheat a large skillet or grill pan over medium-high heat until the surface is evenly hot.
04 - Arrange the marinated chicken pieces in the hot skillet in a single layer. Cook for 6 to 8 minutes per side, until the chicken is cooked through and develops a caramelized, golden-brown exterior.
05 - Remove the skillet from heat and transfer the chicken to a serving plate. Sprinkle generously with toasted sesame seeds and thinly sliced spring onion. Serve immediately alongside steamed white rice or your preferred vegetables.