If you fancy a healthy fast food than I can recommend THE HALAL GUYS on 53 St. 6th Ave.
Most of the time you have to wait in line, because the quality of the food and the price is very good. I chose the CHICKEN COMBO for $ 7, which was a combination of orange rice, fresh salad and shredded chicken. You could also choose between a white dressing (like a joghurt – soya dressing) and a really hot chilli sauce. I chose the red chilli sauce and it was VERY HOT. In a nutshell, very fresh food and the reasonable price makes the wait worth while. Everbody in New York knows THE HALAL GUYS and it should be on your to do list when you are in New York.