Prepare marinade by combining 1/3 cup oil, apple cider vinegar, sriracha, honey and garlic in a large bowl or Ziploc bag.
Trim excess fat from the chicken thighs and add it to the marinade, tossing to coat the chicken. Cover the chicken and marinate refrigerator for at least 30 minutes. Chicken can be marinated for up to 12 hours.
Preheat oven to 400°F.
Remove chicken thighs from marinade and gently shake off any excess. Reserve the marinade for cooking.
Add a liberal amount of salt and pepper to both sides of the chicken thighs.
Heat the remaining oil over medium-high in a cast iron pan or oven-proof skillet. Add chicken thighs skin side facing down and sear for 2-3 minutes (until the skin starts to brown).
Remove the pan from heat and flip chicken thighs skin side facing up. Pour the reserved marinade over the chicken.
Place chicken in the oven and bake for 30-45 minutes. Baste 2-3 times using the marinade in the pan throughout the cooking process for crispier skin.
Prepare the hot honey: Combine honey and chili pepper(s) in a saucepan on low heat. Simmer for at least 5 minutes. Test the spice level of the honey and add more peppers if you like it more spicy.
Once the chicken has been removed from the oven, brush the tops with the hot honey.
Serve with green onions and sesame seeds.