Cut the ciabatta bread in half.
Slice the tomato and lettuce thinly.
Cook the chicken breast and then shred it thinly.
Toast the cut side of the ciabatta bread in a pan until crispy.
Spread olive oil on the ciabatta.
Layer chicken breast, tomato, lettuce, and cheese on the bread.
Sprinkle with salt and pepper to taste.
Cover with the other half of the bread and serve.