Pan fry, grill or boil your chicken breasts until thoroughly cooked and set aside. Fry or grill your bacon until almost crispy and set aside.
Meanwhile, lightly toast your 12 slices of bread. Tear up your washed and dried lettuce leaves.
In a small bowl add the mayonnaise and dijon mustard and mix together well. Taste the mixture and add more dijon mustard if required.
Now build the sandwich. Spread the mayonnaise mix over the 12 slices of toasted bread. Place a small pile of torn lettuce leaves and some tomatoes (approx 1/2 a tomato) on top of a mayonnaise coated, slice of toasted bread. Then add the sliced chicken (approx 1 breast). Salt and pepper the chicken and add the next slice of bread, mayonnaise side down. Next add another layer of lettuce, another layer of tomatoes and 2 rashers of bacon. Place the final slice of toast, mayonnaise side down, on top of the bacon and press the sandwich lightly.
Cut diagonally into two and pierce the two sandwiches with cocktail skewers to hold together and add an olive or cherry tomato to the top of each skewer. Repeat 4 times. Serve immediately with crisps or fries and some pickles.
Please advise whoever you are serving about the cocktail skewers.