If it's the same as the Pita Pit we have here, I like it and it's a nice alternative to deli sandwiches. The food is as "healthy" as the ingredients you add to the pita. A turkey pita with plenty of veggies is different than a "dagwood" pita with grilled onions and peppers and a load of cheese.
Love Pita Pit! They are a bit more expensive than Subway or the like, but they do have coupons all the time pretty much, and they are really filling. The Dagwood is awesome, you actually get a lot of meat, which I can't say for Subway.