The only way to be certain that your gluten free fried chicken is done is to use a thermometer. Your chicken is ready when each piece reads at least 165°F. You can't rely on visual appearance when frying chicken as the coating will darken faster if your heat is too high, even if the inside still needs more time. For this reason, don't try to rush the process: Set your temperatures as I describe, and keep that thermometer handy.