There are two options for how to make these healthy air fryer chicken tenders, with and without a light gluten-free flour breading. But the first steps are the same.
I like to cut my chicken breasts into chicken tenders by cutting length-wise into two pieces (or occasionally three, when I get a monster one). This just helps them cook more evenly, and I don't prefer to buy the tenders-size raw. Then sprinkle all over with salt and set on a plate for 15 minutes. This is the dry brine.
If you do want to do a light GF breading, you can set out a plate or container with some flour in it as well as your spices, then dredge the chicken tenders through it. However, I'm lazy and that feels wasteful, so I just sprinkle the spices on the chicken, then sprinkle some of the flour on them and pat it down (I'm not looking for a thick breading).
If you're not using flour, then just season using whatever spices you want, and I like to spritz some olive oil on them very lightly.
Preheat your air fryer to 390 or 400 F for a couple minutes, then place the chicken tenders in the basket. Air fry for 7 to 12 minutes...this is a wide range because it will depend a ton on how thick your chicken is. I like to flip mine at the halfway point but it's not critical. You want the thickest part to get above 145 F.
Let rest for 5 minutes before serving (this lets the juices settle in, keeping it moist).