Video: If this doesn't convince you to buy a waffle iron, I don't know what will. Waffled mac and cheese replace bread for this bacon and fried chicken sandwich.
There's no printed recipe, but the video above from Food Steez pretty much explains it all. You can also skip the meat and just make mac and cheese sandwiches using Serious Eats' instructions.
I made a mac and cheese waffle variation yesterday and it was pretty good (and decadent), but fair warning: It makes a cheesy greasy mess. Worth trying at least once, though.