Preheat your air fryer to 375 degrees F. Place your ground beef and all the seasonings into a large bowl and stir until combined. Separate your ground beef into 5 ounce balls.
Separate each ball in two pieces. Use 3 ounces to form the bottom patty of your stuffed burger. Make a well in the center of the bottom patty. Place 2 tablespoons of cheese in the center of the patty. Top with 1 slice of cooked, chopped bacon. Flatten the remaining 2 ounces of ground beef to cover the stuffed burger. Seal edges together. Follow this procedure for remaining burgers.
Place the 4 stuffed burgers onto the grate of the air fryer. Set timer for 8 minutes. Flip burgers over and set timer for 6 minutes. Check center of burgers with an internal thermometer. Temperature should read 160 degrees. Top burgers with cheese if desired and cook 1 minute more to melt cheese.
Serve immediately. Enjoy in a lettuce wrap with bacon, pickles, onion, mayo, mustard and avocado.