01 - In a mixing bowl, whisk together the soy sauce, sesame oil, honey, brown sugar, rice vinegar, minced garlic, grated ginger, gochujang, toasted sesame seeds, sliced spring onions, and black pepper until well combined.
02 - Place the chicken thighs in a large resealable bag or shallow dish. Pour the marinade over the chicken and toss to coat evenly. Marinate for at least 30 minutes at room temperature, or refrigerate for up to 8 hours for deeper flavor penetration.
03 - Preheat the oven to 425°F. Line a baking tray with aluminum foil or parchment paper to prevent sticking and simplify cleanup.
04 - Remove the chicken thighs from the marinade, shaking off any excess liquid. Arrange them in a single layer on the prepared baking tray, ensuring even spacing for proper caramelization.
05 - Roast for 22–25 minutes, flipping the thighs once halfway through cooking, until the exterior is caramelized and the internal temperature registers 165°F. For additional char and caramelization, broil for 2–3 minutes at the end of roasting.
06 - Allow the chicken to rest for 3–5 minutes to redistribute juices. Garnish with toasted sesame seeds and sliced spring onions before serving. Pair with steamed rice, kimchi, and sautéed greens for a complete Korean-style meal.