The closest Jack in the Box to Philadelphia now is in Charlotte.
Jack in the Box has been around since 1951, and is based in San Diego, so it's probably been around as long, if not longer, than some of those mom and pop joints.
I don't know what's wrong with you Rich, but those tacos are fantastic.

You KNOW it's a greasy unhealthy taco, with limp lettuce and sliced cheese...but it's still so good.