In a large mixing bowl, mix the spices, oil, and lemon juice together.
Add the salmon steak into the bowl and cover each one generously with the spice mixture.
Preheat the air fryer for 5 minutes at 360°F (180°C).
Place the salmon steaks in air fryer basket for 15 minutes, flipping the salmon every 10 minutes or so. (Don't overcrowd the basket, make in batches as necessary).
Open the air fryer to see if the salmon steaks are crispy enough for you, and heat them for a couple more minutes if you wish.