Spray avocado or olive oil spray on the bottom of your air fryer basket and preheat to 400 degrees.
Take out 2 bowls. In one crack and scramble both eggs.
In the other, add almond flour, flax seed and spices and whisk together until fully combined.
Peel your onion and cut into rings that are about 1/2 inch thick and pull apart each ring. Discard the inside smaller rings or use them for something else. These could be made into onion rings if you don't mind the shape.
Dip each onion ring into egg coating it evenly and then press into flour mixture making sure it is all evenly coated. Place each ring onto a plate until you have a basket full before putting into air fryer.
Repeat above step until all onion rings are dredged and coated.
Next, spray your breaded onion rings with a light coat of olive oil or avocado oil spray to ensure they get a nice crispy brown color.
Using tongs, place in a single layer into air fryer basket. Do not over crowd the basket. Onion rings may need to be cooked in several batches.
Cook for 5-7 minutes and flip to cook another 5 minutes. Keep checking on them as they can burn quickly.
Once onion rings are cooked, serve immediately.