Cook bacon until crisp and then chop. Reserving grease for onions.
Cook onions in reserved bacon grease and let cool.
Mix mashed potatoes with bacon, cheese and cooked onion in a large bowl.
Put potato mixture in the fridge to rest for 1 hour or longer.
Put a sprinkle of breadcrumbs on a large platter to rest the uncooked balls.
In 1 shallow bowl add flour. In the second shallow bowl add beaten eggs and the third shallow bowl the plain breadcrumbs.
Use a cookie scoop, two spoons or my preferred method my hands with latex gloves. Scoop the potatoes into a ball shape the same size.
Roll the ball in flour and shake off excess.
Then place the floured ball into the egg and roll to coat. Allow excess to drip off being careful not to smash the balls.
Place the egg coated balls into the breadcrumbs and roll to coat completely. Then put balls on your resting platter.
Repeat the process until all the balls are coated.
Put balls onto the tray or basket depending on the type of airfryer you have. Spray both sides of balls with cooking spray.
Cook in the airfryer at 400' for 5 minutes and then turn over and cook for 3 more minutes.
Serve Immediately with chives.