Forget red sauce or white sauce, thin crust or deep dish — the real question is salad or no salad? On top, that is.New Yorkers are talking after a curious image popped up on the Long Island Foodies Facebook page: a slice of pizza topped with a chicken Caesar salad. “It’s a bad picture, but in your experience, is a salad slice normally on a regular slice?” Sam Marshak asked his fellow foodies. “I’ve never seen this, so just curious what the norm is.” Yes, if you’re like this reporter and didn’t know, “salad pizza” is a thing. The pies...