If you can't eat corn, these tortilla chips from Riceworks are an excellent alternative. They are crunchy and flavorful - they come in sweet chili, sea salt, salsa fresca, parmesan, wasabi and baked cinnamon flavors. I tried the sea salt and sweet chili flavors. Both were really good. Overall, I still prefer regular corn tortilla chips, but these are an excellent alternative.
They are available at Whole Foods and other similar stores.