Whisk together the sauce ingredients (vinegar, sugar, ketchup. soy sauce. garlic powder, red pepper flakes) in a small bowl and pour half of the sauce evenly over the chicken. Turn the chicken to ensure each piece is coated.
05Bake for 1 hour, turning the chicken every 15 minutes. Take the remaining sauce and reduce in a small sauce pan.
06Top with sesame seeds and additional sauce, serve with rice and stir fried veggies.