Chicken-Potato Chip Club Sandwiches

slices bacon

mayonnaise, plus more for spreading

Juice of 1 lemon

chopped fresh herbs (such as dill, chives and/or parsley)

stalk celery, finely chopped

chopped rotisserie chicken (skin removed)

Kosher salt and freshly ground pepper

slices white sandwich bread, crusts removed

potato chips, plus more for serving

tomato, thinly sliced

Lettuce leaves, for topping

small bunch watercress, large stems removed

Pickles, for serving