Fill the bagels with ham then the Cheddar. Crack the egg into the hole in the centre of the top of the bagel, you might not need all the egg white. Sprinkle with the Walnuts and place in the tray.
Bake in the air fryer at 180oC for 8-10 minutes until the egg white has just set, cover with foil towards the end if looking a little dark. Sprinkle with parsley to serve.
