A baked potato stood on its end and split open with a cross cut could be made to look something like an Alien egg pod bursting open. You’d have to find some messed-up condiments to get this effect, though.
Also potstickers can look pretty alien.
And what about fried tubeworms? Doughnuts maybe?
Spoo.
I only knew the new spoo.
I never even heard of Spoo, and now there are at least two kinds. 
Ah, thanks!