Asklemmy

Well, that amount of deviled eggs is weird.

That being said, there's some differences involved.

Moisture, size, seasoning, and chewability.

Deviled eggs have the dryest part removed and moistened. This makes eating two of them easier than the whole egg would be.

With the addition of moisture comes the ability to chew the result easier, so you don't look like an idiot while eating. You don't have to take a bite and roll it around your mouth while trying to get it into small enough pieces, mixed with saliva so you can swallow.

The seasoning comes in by making it taste like something you want to savor, to keep in your mouth longer.

And, since they're half an egg, they can be popped in all at once, or in two clean bites, without spilling fragments. In either case, you aren't sitting/standing/dancing/masturbating holding a partly eaten egg in your hand as long. This means that it looks like you're eating less than you are, even when having the equivalent of a half dozen eggs. So it doesn't register as someone eating six eggs, it registers as someone snacking casually.