I had 2 seizures in a week after smoking "spice". it's been 3yrs but i still get an "aura" when seeing flashing lights. am i at risk for seizure?

Yes, but probably: not too much risk, it if has been 3 years since your last seizure. Consult with your doctor for specific advice on what to do about it.

Likely yes: I hope you have engaged in rehabilitation and are avoiding these so-called "recreational drugs", but you need to have an updated evaluation due to the reaction to flashing lights, which can act as a photic trigger for seizure activity. Risk may be low, but under circumstances cover your bases.