Run the oil from the tuna into a saucepan, sauté the finely chopped parsley, anchovy fillets (finely chopped), the chili pepper (finely chopped). Add the chopped tuna meat and sauté (add a little olive oil if necessary, if the fish oil is not enough) with the canned tomatoes. Mash the tomatoes with a spoon and simmer gently for about 1 hour, seasoning lightly with salt.
If you like, add 1 small jar of capers.
Make the pasta, mix with the sauce in a baking dish, bring to the table, ready!