If you answered PUPUSA to both questions, you answered one of them correctly and the other was way, way off the mark (it's like you didn't even understand that I was looking for a person's name). Bottom line, Parkside Donuts 'n' Chicken 'n' Pupusa 'n' Burger 'n' Grits serves the Salvadoran specialty much as you see it here, right down to the cole-slaw like curtido:
Pupusas, also known as Pupisio, were first created centuries ago by the Pipil tribes that dwelt in the territory now known as El Salvador. Cooking implements for their preparation have been excavated in Joya de Cerén, "El Salvador's Pompeii", site of a native village that was buried by ashes from a volcano explosion, and where foodstuffs were preserved as they were being cooked almost two thousand years ago.
I did not know that El Salvador had its own "Pompeii," but somehow I doubt I'll forget it.
There's much more to say...about the food at Parkside Donut, about the terrible murder that took place there a couple years ago, about the history of Kennedy Chicken, the non-franchise that's ubiquitous in NYC's low-rent neighborhoods. Actually, does any neighborhood in NY qualify as low-rent anymore? And did you know that Kennedy Chicken was started by Afghans forty years ago, and that it's really more a concept and a loosely followed recipe than a brand? Read this illuminating article for more info: Chicken Wars.
If you've been in NYC for more than a few years, answer this bonus round question: what was the name of the highly-visible chicken joint at the corner of Flatbush and Fulton?