I'm not sure, but I would suspect its possible because you can get a large pizza for two QS credits at other resort food courts. CSR's food court is operated by a third party so there are some differences, but they've aligned more to other resorts in recent years.
That said, I will caution that we did not like the CSR pizza at all. Its not the same thick/doughy pizza that you'd find at other resort food courts or at places like Pizzafari and PizzaRizzo. While that pizza isn't the best, we liked it better than what was at CSR. CSR had more of a flat bread style pizza which we just didn't care for.