I believe you're referring to
fasciculations. I've had them on and off since I was a kid. No specific places, just random muscles from time to time, including the eye. I don't think it's related to vaping
per se, as they can be caused by (among other things) stimulants, which nicotine and caffeine qualify as. They can also be caused by dehydration, which is a side effect of vaping, since VG and PG are both humectants. Reducing stress and anxiety, drinking lots of water, and taking in an adequate supply of vitamins and minerals (particularly magnesium) can help mitigate them.