A common misnomer applied to lightweight Oriental papers. Rice alone cannot produce a sheet of paper. Rice or wheat straw is used occasionally mixed with other fibers in paper making. The name may be derived from the rice size (starch) once used in Japanese papermaking
There are some kinds of rice paper that are really made from rice straw and rice flour. There are other products that are called rice paper that are made from other plants.
Yes, I wouldn't try it with Zatarains though because the ingredients are different. Other then this, you could definitely cook dirty rice in a rice cooker.