I’ve just downed the KFC Double Down, a sandwich that initially sounded like a joke:  Bacon, cheese, and some sort of spicy mayo sauce sandwiched between two pieces of juicy, KFC chicken coated in the Colonel’s “11 secret herbs and spices.”  Bread?  Who needs it!? Adding to the hilarity, there’s a whopping 540 calories, 32 grams of fat, and just ONE single, solitary gram of fiber in this meaty ...