Place bacon in the cold air fryer basket in a single layer.
Cook the bacon at 400º. Thick cut bacon takes 7 minutes and regular-cut bacon takes 5. Flip the bacon halfway through cooking. If you like chewier bacon, cook for less time. If you like crispier bacon, cook for an additional 30-90 seconds.
Using tongs, remove the bacon to a paper towel-lined plate and serve immediately.
Notes
Drain the basket of any bacon grease between batches. Carefully pour it into a heat-proof container or jar.