[Nothing Zim has said seems to concern her in the SLIGHTEST, because she's assuming he's pretty much a standard specimen of his species. In her experience, organics don't tend to vary in shape and size anywhere near as drastically as gems do.

She leans forward a little, sneering maliciously.]

The Almighty Tallest? THAT'S what you call your leaders? [SNICKERING.] What gives them their authority, their ability to retrieve bags of cheesy chaps off of the highest surfaces?

[Peridot your species' Ultimate Leaders are literally giant woman.]