and it's annoying the hell out of me.  What do?
It might seem odd but your diet can actually be the culprit for this. I used to have it all the time and I thought it was because I was always sleep deprived but then I realized that I was simply having too much potassium in my body. Be careful because eye twitching could also be a symptom of an underlying brain or neurological disease.
Hrrrm..  well.....  ok..   the Action potential,  the signal chain along your axons, utilizes Calcium , Potassium , and Sodium.
I have no idea if eating too much potassium would cause anomalies..   but,   in an oversimplified sense,  it's possible.