This combination may sound odd, but it is pretty good. We originally had something similar many years ago on a British Airways flight to Italy. Once again, it may sound odd that we are trying to emulate airplane food, but I think that it is just really a British influenced food.
The sandwich is very simple and contains only cheddar cheese, a scrambled egg (seasoned lightly with salt) and mango chutney. We've used a lightly toasted Oroweat potato bread, but you could really use any bread. I bet this would be good on a bagel too.