Trim the ends of your green beans and place them in a medium mixing bowl. Add the lemon juice and seasoning and mix to evenly coat the beans.
Place them in your basket and air fry at 380 degrees F (193 degrees C) for 8-12 minutes, until golden brown. Mix halfway through cooking.
Remove the green beans from the fryer and sprinkle with the optional parmesan cheese, if desired. Enjoy.
Notes
Quick tip for trimming your green beans. Line up several at a time and trim the ends, then rotate and trim the other side. It's much faster than trimming one bean at a time.