Place pasta, gluten-free flour and oat milk in your rice cooker insert, then stir to dissolve flour.
Add Earth Balance, mayo, salt, pepper, nutritional yeast, grated cheese alternatives, paprika and hot water, then stir again to combine.
Place insert into rice cooker, close lid, set to the "steam" setting for 20 minutes, and hit "start."
After 10 minutes, open the lid and carefully stir the pasta, then close lid and allow it to steam for the remainder of the time.
When timer goes off, carefully open lid, stir, garnish with snipped chives if desired, and serve right away.