Just wanted to point out that a lot of the salads, which some people consider healthy, run around 900 calories or so. For a salad. Unless of course you ask for it without the dressing and certain toppings.
Anyway, it's difficult to find food at DLR that's completely healthy. It would help to know if you're paleo, if you have certain food allergies, and what your definition of "healthy" is. That being said, the Bengal BBQ kabobs are good, there are plenty of stands with fresh fruits, and I agree with others that you can go to a Mexican restaurant and ask for no tortilla (but, most of the meats are cooked in sauces, which probably have refined sugars or something else you shouldn't eat in them).
I'd bring your own food honestly. Then you don't have to worry about it.