Goodness, I love it on the very rare occasion that my husband isn't home for dinner either. My favorite meal is a peanut butter sandwich with a diet coke and a piece of fruit. Either that or a grilled cheese sandiwch. I know this sounds crazy, but it's true. I normally cook well-balanced meals with meat, veggies, etc., but my dream meal is a simple, every-day sandwich.
I actually don't eat when no one is around. When I was away from home for a few months I'd forget about eating a lot and had to be reminded by my mom who'd call from halfway across the world - it's probably related to the kind of food we cook and eat (which is prepared in larger quantities for the whole family to enjoy rather than an individual portion)
If I had to eat something it would be SALAD (with tuna in it) or Fatoosh (salad with pieces of pita in it and a middle eastern dressing)