Amatrice is a small city in very central Italy. Occupied since prehistory, it was nearly destroyed by an earthquake in 2016. Right after that tragedy, many Italian-American restaurants added this as a special to help raise funds for the stricken community.
It's a simple, delicious dish, but not quite as quick as it looks. Pancetta is rendered and then cooked with onions and tomatoes long enough to become soft and mellow, then it's tossed with pasta, typically spaghetti or bucatini.