Cut cauliflower into bite-sized florets and toss with oil, salt and pepper.
Place a slightly crowded single layer (they will shrink some in the air fryer).
Use the highest setting on the air fryer for about 10 minutes, and shake every two to three minutes.
After 10 minutes, check the color and doneness. I prefer brown with some dark brown spots and a crunchy texture. Put the cauliflower back in for longer if needed.
Remove, season with other seasonings after cooking (to prevent burning) and serve