In a shallow bowl, add the egg white, ketchup, and hot sauce and mix well.
In another shallow bowl, place the breadcrumbs.
Dip the cauliflower florets in ketchup mixture and then coat with the breadcrumbs evenly.
Grease the Air Fryer Basket with cooking spray and then slide inside.
Adjust the temperature of Air Fryer to 320 °F to preheat for 5 minutes.
After preheating, arrange the cauliflower florets into the greased Air Fryer Basket in a single layer.
Slide the basket into Air Fryer and set the time for 20 minutes.
While cooking, shake the basket once halfway through.
After cooking time is finished, remove the cauliflower florets from Air Fryer and serve.