Mix the ground/minced chicken with the spring onion, garlic, and egg. Season with salt and pepper.
Divide the chicken burger mixture into 4 equal portions. Shape with your hands into burger patties firmly.
Heat oil in the frying pan. Add the chicken burgers and fry gently on both sides until golden and cooked through to the centre.
At the same time, fry the onion rings and bacon.
Lay one large lettuce leaf on a plate. Make the ABC bun-less burger by placing the cooked bacon, chicken burger pattie, avocado, and cooked onion rings onto the lettuce. Fold the lettuce leaf over to become the lettuce "bun".