Break the egg into a bowl and beat lightly. In a separate bowl add the almond flour, salt and cayenne (if using).
Slice each avocado in half and remove the pit. Remove each half from the skin and then slice into 4-5 slices per half - OR - cut the slices while still in the skin and then remove rind from skin.
Heat oil in a deep fryer to 350F or in a stovetop pan until a wooden spoon inserted forms bubbles.
Coat each avocado slice by dipping first in egg, then the almond flour.
Place coated slices in oil and fry for about a minute in a deep fryer or a minute per side if using a pan.
Remove cooked fries fires to a plate lined with paper towel to absorb excess oil.
Make sauce by mixing mayo with sriracha and use for dipping.
Notes
Nutrition calculation is based upon using only a portion of the egg, almond flour and oil.