Not much of a snack I guess, depends how much time you have to snack, but takes me like 5 mins
scramble up 2-3 eggs(or egg beaters/egg whites whatever you'd like)
I throw in 3-4 slices of turkey bacon which pack ~5g protien depending on brand
i also throw in some mircowaveable pre made chicken, 3 oz packs in a good 20g,
sometimes ill throw roast beef, or ham in there also depends how I'm feeling
top off with some cheese and i could it that all day. again not really a snack but sometimes people forget they can throw just about anything into an omlet. I know people who mix protien powder into their eggs, I never tried it but they say it doesn't taste much different.