Finely slice the lettuce and add to a colander. Rinse well under cold water, drain and pat dry with a clean kitchen towel.

Use two forks to shred the chicken then add to a bowl with the chopped parsley and shallot. Season generously with salt and black pepper.

Add the mayonnaise to the chicken mix and stir well to combine. Taste and add more seasoning if required.

Spread the chicken mayo mixture evenly over two slices of your preferred bread, then top with a generous handful of lettuce and another slice of bread.

Slice each sandwich in half and enjoy!