You're not clear on whether you mean the Paradise Pier hotel, or the Paradise Pier section of California Adventure.
If you mean the hotel, they don't have anything "quick" like Croc's Bits N Bites, all they have are sit-down restaurants.
If you mean at California Adventure, then you got a very good answer. I personally would recommend the corn dogs at Corn Dog Castle, but don't get the spicy dog--it was gross.