1Season your chicken thighs with garlic powder, onion powder, paprika, and black pepper, making sure to cover every part.
2Add the chicken to a hot cast iron pan with a tablespoon of oil and brown both sides; it doesn't need to finish cooking at this point.
3Remove the chicken from the pan and let it rest.
4In a bowl, whisk together the soy sauce, hoisin, ketchup, apple juice, water, apple cider vinegar, brown sugar, grated ginger, and grated garlic until homogeneous.
5Pour the sauce into the pan and scrape up any fond, then let it reduce by half.
6While the sauce reduces, cut the chicken into bite-sized pieces.
7Once the sauce is reduced, add in a cornstarch slurry to thicken.
8Add the chicken back into the pan and let it all simmer until it comes up to temp.