In a bowl, whisk together gochujang, soy sauce, sesame oil, honey, garlic, and ginger to create a marinade.
Add the chicken thighs to the marinade, ensuring they are well coated. Let them marinate for at least 30 minutes or overnight for best results.
Heat a skillet over medium-high heat. Cook the chicken thighs for 4-5 minutes on each side until fully cooked and caramelized.
Garnish with sesame seeds and chopped green onions before serving. Serve hot with steamed rice or vegetables.