Cut your Tempeh into ½ inch strips. Then turn them on their side to cut again, making thinner strips. 

Tempeh is fermented soy and can be bitter. To help make them tender and to take some of the bitterness away you will want to steam your tempeh before air frying it. To do this fill a pot with about 2 inches of water in it. Bring it to a boil. Place your tempeh in a steaming basket and steam for 10 minutes. If you do not have a steaming basket, you can place it in the water and hard boil it for 10 minutes, but you will need to pat them dry before the next step.

Preheat your air fryer to 380 degrees. 

Place your steamed tempeh on a cutting board and brush both sides of it with olive oil. Brush the inside of your air fryer with olive oil as well. Then place your tempeh in the basket, leaving a little room around each of them. 

Cook for 7 minutes and then flip them. Place them back in the air fryer for 4 more minutes and then remove the basket. Brush the tops of your tempeh with BBQ sauce and then place it back in the air fryer for an additional 3 minutes. (14 minutes total) This allows that BBQ sauce to caramelize and get a delicious sticky texture to it. 

When they are cooked and are crispy, then place them back on the cutting board and brush them with BBQ sauce again, covering them. Enjoy immediately.