01 - In a large bowl, whisk together the gochujang, soy sauce, honey, rice vinegar, sesame oil, minced garlic, and grated ginger until smooth and well combined.
02 - Add the chicken pieces to the marinade, tossing thoroughly to coat evenly. Let rest for at least 10 minutes at room temperature, or refrigerate for up to 2 hours for deeper flavor penetration.
03 - Place a large skillet or grill pan over medium-high heat and allow it to get hot before adding the chicken.
04 - Transfer the marinated chicken to the hot skillet and cook for 6 to 8 minutes per side, until the pieces are cooked through and develop a caramelized, lightly charred exterior.
05 - Remove the chicken from the heat, sprinkle generously with toasted sesame seeds and thinly sliced spring onion. Serve immediately alongside steamed white rice or vegetables.