Interesting from the responses I've had so far, here and elsewhere, that no-one has suggested anything vaguely Italian (with the exception of funghi con gorgonzola).
[INJ] Now I think of it, the Smoked Mackerel one was an untoasted baguette, but the Sweet Chilli Chicken is a toasted panini, and includes some lettucey things and chopped gherkins.
[Phil] I suspect it's because the Italians would never take cheap bread and squish it between hot plates to make it palatable, let alone consider it a delicacy. It's a rather recent lunch-comestible-vendor's invention.