01 - Toast all 6 bread slices in a toaster until golden brown and lightly crisped on both sides.
02 - Spread mayonnaise evenly over one side of each toasted bread slice using a butter knife or spatula.
03 - Place 2 slices of toast mayo-side up on your work surface. Layer each with half of the turkey or chicken breast, a slice of ham if using, 2 strips of bacon, sliced tomato, and a leaf of lettuce. Season with salt and pepper to taste.
04 - Top each stack with a second toasted bread slice mayo-side up. Repeat the layering with the remaining turkey or chicken, ham, bacon, tomato slices, and lettuce. Season again with salt and pepper.
05 - Place the third toasted bread slice mayo-side down on top of each sandwich to finish the triple-decker assembly. Insert 2 toothpicks into each sandwich to hold the layers together, then cut diagonally into quarters to create classic club wedges.
06 - Arrange the quartered wedges on plates and serve immediately alongside potato chips or a fresh side salad if desired.