Boil the chicken breast and shred it along the grain.
Wash the basil leaves thoroughly and remove any excess moisture.
Slice the chicken ham thinly and set aside.
Cut the lettuce and tomatoes into bite-sized pieces.
Spread basil pesto evenly on a slice of bread.
Layer the shredded chicken breast, chicken ham, basil leaves, tomato, and lettuce on top of the bread in order.
Cover with another slice of bread and cut into pieces for serving.