In a large bowl, add chicken thighs, minced garlic, gochujang, gochugaru, soy sauce, brown sugar, sesame oil, and salt. Marinate for 30 mins or overnight preferred.
Preheat air fryer to 425F for a few mins. Add chicken thighs (don’t overcrowd and cook in batches as needed) and air fry for 11-14 mins, flipping halfway, until browned and cooked through (internal temperature should be 165F or more)
While the chicken is cooking, combine all the sauce ingredients in a cup or bowl and set aside.
Serve chicken with fluffy white rice, veggies, and other sides you desire. Pour gochujang sauce on top of the chicken for extra flavor.