Our family found that the best food value in New York can be found in the halal food trucks. Although there are some duds out there, we found most offer excellent food at a great price.
One that we liked in particular is La Baguette, a truck that can be found on 40th, near Broadway. The chicken kabob can be $3 or $4 (prices can vary at the same truck, which is why prices are often not posted). The chicken over rice (top) will make you full for $5 and the meat-packed lamb gyro above was a steal for $4.