Is it normal to eat your scabs?

So I know it's bad to pick your scabs because it can leave a scar, but sometimes they're so irritating, or sometimes you just accidentally scratch it off. When this happens, I guess I don't really know what to do with the scab, so I eat it. It's not like it's super gross...although I guess it IS form of cannibalism, but it's just something I've always done my whole life. Is this normal?