Preheat oven to 400℉ and line sheet pan with parchment paper.
Place chicken thighs onto sheet pan and drizzle Korean BBQ sauce over thighs, flipping to coat. Set sheet pan onto middle oven rack and cook for ~12-15 on each side or until fully cooked. Optionally, place onto upper rack at near the end of cooking and turn on broiler — let broil for ~3 mins. or until sauce has caramelized.
While the chicken cooks, prepare sesame broccoli by tossing steamed broccoli with sesame oil, sesame seeds, salt, and garlic powder.