If you are thinking sandwich or sub, the pita pit is a good alternative. Love the chicken/ham swiss cheese melt. Good freash toppings. The Pita looks big, but is not too filling.
Pita Pit has a great selection of fresh toppings and dressings. I like the tzatziki and feta cheese and I haven't seen any horrible green tomatos yet (Iike Subway always seem to have). My only complaint is that there doesn't seem to be very much meat in the pitas given the price you pay.
This chain is squirrelled away right next to a Quizno's in the Parkwood Place shopping center. I'm not sure I'm right on its being a bit healthier than a lot of subs - basically it offers the same kind of fillings as sub joints do but also, appropriate for the Middle eastern origins of pita bread, the classic, hummus (chick peas, tahini etc.)