For the best crisp crust, use finely grated Parmesan that resembles sand rather than long shreds so it packs and browns evenly. Avoid moving the chicken too early in the pan, since the cheese releases naturally once it has crisped and will stick if flipped before it is golden. If your skillet is smaller, cook the chicken in batches and add a little more oil between batches as needed. Leftovers keep well in an airtight container in the refrigerator for up to three days and reheat best in a 375°F oven or air fryer until warmed through and re-crisped. This recipe stays strictly keto by skipping all flours and breadcrumbs while still delivering a satisfying, crunchy coating.