Heat broiler. Place the baguette pieces on a heavy cookie sheet and brush with 1 tablespoon of the oil. Place under broiler for about 1 to 2 minutes, until golden. Turn the bread pieces and broil for an additional 1 or 2 minutes.
In a large bowl, combine the remaining oil, beans, pickles, onion, vinegar and pepper. Fold in the broiled baguette pieces. Divide the mixture among four bowls and top with the tuna and parsley.