one of my favourite quickies is Souvlaki
get a round of Lebanese bread or any flat bread, a tin of "Stagg" * Heat the Stagg, and put it on flatbread with grated cheese and salad top off with sour cream and a garlic sauce.
Roll it up and put it in a plastic bag as it has a tendancy to drip out. If you have the time you could fry up some diced steak and skip the tinned stuff.
* Stagg is an American tinned chilli beans, meat and comes in a variety of hot ranges.
Another is a crispy bread roll with a nuked egg and bacon with BBQ sauce.
to nuke the egg, put it in a cup and a few DROPS of water. pierce yolk but dont disturb it. Add seasoning to taste, place in microwave and cover loosely with a plastic sandwich bag (or SWMBO will get narky) give it about i minute on 1/2 power, check to see if it is runny, and then add the bacon, give it full power in 10 second increments. the time changes with the egg weight and initial temp. remove a perfectly round egg and put it on roll, add hot bacon and some salad. It sounds complicated but it isn't all up it takes 2 minutes