Working one at a time, dredge chicken in flour, dip into buttermilk, then dredge in flour again, pressing to coat.
Working in batches, add chicken to the skillet, 3 or 4 at a time, and cook until evenly golden and crispy, about 2 minutes on each side. Transfer to a paper towel-lined plate.
In a large bowl, combine chicken and sauce until evenly coated.
Serve warm.
For the sauce
In a small bowl, combine cornstarch and 1 tablespoon water; set aside.
In a small saucepan over medium heat, combine honey, soy sauce, apple cider vinegar, sesame oil and red pepper flakes. Bring to a boil; reduce heat and stir in cornstarch mixture until slightly thickened, about 2-3 minutes.
Notes
Use a cast iron skillet. A cast iron skillet is ideal here for even heat distribution for the hot oil.
Use reduced sodium soy sauce.Reduced sodium has less sodium and less salt without compromising flavor.
Cook in batches. If too much chicken is added at once, the oil temperature will drop and the chicken will absorb too much oil, resulting in soggy chicken.
Mix it up. Use pork or shrimp in place of the chicken.
Double the sauce. Need extra sauce for sopping with rice? The sauce portion can easily be doubled or tripled for those saucy folks!