Follow these steps to create delicious Chicken Club Sandwiches:

1. Prepare the Chicken: Season the chicken breasts with salt and pepper. Drizzle olive oil in a pan over medium heat.
2. Cook the Chicken: Add the chicken and cook for about 7-8 minutes on each side, or until golden brown and cooked through. Remove from the pan and let it rest.
3. Cook the Bacon: In the same pan, add the bacon slices and cook until crispy, about 3-4 minutes per side. Remove and drain on paper towels.
4. Toast the Bread: While the bacon is cooking, toast the bread slices until golden brown.
5. Slice the Chicken: Once the chicken has rested, slice it into thin pieces.
6. Assemble the Sandwich: Start with a slice of toasted bread, spread mayonnaise generously. Layer with lettuce, sliced chicken, two slices of bacon, and tomato slices.
7. Top and Serve: Add another slice of bread, and if desired, repeat the layering process before topping with a final slice of bread. Cut the sandwich in half to make it easier to handle.