Cook the bacon in a frying pan until crispy, then remove and drain on a paper towel.

Toast the bread slices in a toaster or on a griddle until golden brown.

Spread a layer of mayonnaise on one side of each slice of toast.

Place one slice of toast on a plate and top with a lettuce leaf, a tomato slice, and two slices of smoked chicken breast.

Add another slice of toast and repeat the layering process.

Add the final slice of toast, then top with the remaining smoked chicken breast and bacon slices.

Secure the sandwich layers with toothpicks, then cut the sandwich in half and serve immediately.