peel shrimp if needed, rinse, and pat dry with paper towels
preheat the air fryer at 400° for 5 minutes
place shrimp in bowl and drizzle with oil, toss to coat
mix spices together
sprinkle half the spices over the shrimp and toss to coat
add the remaining spices and toss to coat again
when the air fryer is preheated add the shrimp to the basket
air fry on 400° for 8 minutes, shaking after 4 minutes to redistribute the shrimp
continue cooking on 400° for 4 minutes or until a digital thermometer reads a finished temperature of 120°
squeeze the lemon over the shrimp before serving if using
serve cajun shrimp hot or cold or as desired