Pat dry:Pat the chicken dry with paper towels — removing moisture ensures a crispier crust.
Season:Toss chicken pieces with salt, pepper, and garlic powder.
Coat: Dredge each piece evenly in potato starch (or cornstarch). Shake off excess.
First fry (for cooking):Heat oil to 325°F (165°C). Fry chicken in batches for 5–7 minutes until light golden. Remove and let rest for 5 minutes.
Second fry (for crispiness):Increase oil temperature to 375°F (190°C). Fry again for 2–3 minutes until deep golden and extra crispy.Place on a wire rack to drain excess oil.
In a small saucepan, combine gochujang, soy sauce, honey, vinegar, garlic, ginger, sesame oil, and ketchup.
Cook over medium heat for 2–3 minutes, stirring until smooth and slightly thickened.Remove from heat.