01 - In a mixing bowl, whisk together the soy sauce, honey, sesame oil, minced garlic, minced ginger, gochujang, rice vinegar, toasted sesame seeds, black pepper, and sliced green onions until well combined.
02 - Place the chicken thighs in a large resealable bag or shallow bowl. Pour the marinade over the chicken, ensuring every piece is thoroughly coated. Refrigerate for at least 30 minutes, or up to 6 hours for deeper flavor penetration.
03 - Preheat the oven to 425°F or set a grill to medium-high heat.
04 - Remove the chicken from the marinade and arrange on a parchment-lined baking sheet or place directly onto the preheated grill. Bake or grill for 20 to 25 minutes, turning once halfway through, until the chicken reaches an internal temperature of 165°F and develops a caramelized exterior.
05 - Transfer the chicken to a serving platter. Sprinkle with toasted sesame seeds and thinly sliced green onions. Serve immediately while hot.