Clean the prawns and shrimp, then cut them into small pieces. Wash the clams and set the clam meat aside.
Sauté all the seafood in a frying pan, add the peeled and diced tomatoes, salt, pepper, and chili pepper. Cook everything for a few minutes.
Cook the Barilla Spaghettini in plenty of salted water, drain, and sauté in the frying pan with the sauce. Serve sprinkled with chopped parsley.