An air fryer is great for heating up leftover pizza.yackers1/Shutterstock I've been a restaurant critic for 15 years, and I like using my air fryer when I eat at home. I love to air-fry everything from Japanese katsu to Brazilian-style chicken thighs. The air fryer is great for crisping up frozen foods, from Malaysian roti to Korean corn dogs. I've worked as a food writer, editor, and critic since 2008, so I'm usually too busy eating at restaurants to do much cooking at home.