For best results, do not skip parboiling the potatoes with baking soda – it creates a rough surface for the parmesan to grip. Start chicken in a cold pan for crispier skin. Always grate your own parmesan. Store leftovers in the fridge for up to 4 days; reheat in the oven at 350°F for 10 minutes to restore crispness. For dairy-free, use vegan parmesan and omit the butter. For a spicy version, add 1/2 tsp red pepper flakes to the parmesan mixture.