1lb chicken - cut it up into small pieces for quicker cooking time. saute with diced onions (or omit if your kids wont eat onions) with a bit of olive oil.
once cooked - let cool and shred.
1/2 C bbq sauce
1/4 C water
brown sugar (add as much until it's sweet to your liking)
mix the sauce in with the shredded chicken and coat. cut a baguette or roll into half. place chicken on top, top with a slice of cheese and stick in the microwave for 15 seconds or until cheese is melted. DELIC!
open a can of green beans or cream corn . . .
(and since we're talking about food costs . . . get your chicken at Costco, buy your cheese in a block and slice it yourself and I'd bet this meal ends up being a cheap one!)