Mix together in a medium bowl drained salmon (you can also use tuna), mayonnaise, pico de gallo, pickles and celery. Mix with a fork to break up the salmon pieces. Salt and pepper to taste!
Heat oven to broil, and on a cookie sheet lay down 4 small flatbread. Broil each side for about 1 minute until firm and toasted.
Spread the salmon mixture on top of each flatbread; top with shredded cheese. Broil for another minute or so, until the cheese is melted and bubbly. Serve!