Spray the airfryer basket/baking tray with 1 kcal spray.
Add the egg to a bowl and whisk well with a fork.
Add your oats, ground almonds and Cajun seasoning to another bowl and season well with salt and pepper.
Mix well and leave aside.
Cut your fish fillets into 2cm thick strips.
Dip each strip into the egg mixture and shake off excess.
Then lay it gently into the oat/almond mixture and press gently on both sides to coat.
Place the piece of coated fish into your airfryer basket/baking tray and repeat with the remaining fish strips.
You will likely need to do 2 batches so the airfryer is not overcrowded.
Spray the fish and bake in a preheated oven or airfry for 10 minutes at 200 degrees Celsius flipping halfway through until the fish is crispy and cooked throughout.
While you are waiting for the fish to cook, mash your avocado and season with salt and pepper.
Dice your tomatoes.
Heat the corn tortillas (microwave or dry frying pan).
Top each warm tortilla with some mashed avocado, diced tomato, crispy fish and your favourite sauce.