I believe most of the Disney restaurants and resort food courts offer a marathon weekend special. Last year I ate at the Pop food court and they had baked ziti w/ salad and a breadstick. I think most restaurants would be able to accomodate a request for a chicken breast sandwich or plain pasta dish.
There are a few italian restaurants if you are looking for pasta... Mamma Melrose, Tutto Italia, Tony's Town Square. I think the food court at Port Orleans has a kind of 'create your own pasta dish' bar.