If you're looking for an affordable group dinner that isn't Asian, Pio Pio is a good choice. This Peruvian restaurant has many outposts in NYC. The one in Hell's Kitchen is modernly decorated with a huge space in the back and downstairs. In fact, I've seen groups of 20-30 being lined up there. So if you're doing a group of that size, this may be the place for you.
And what's an order of the chicken without some Salchipapas ($6). Yes, that's right. Fried hot dogs and french fries. It's delicious, addicting, and the awesome.
604 Tenth Avenue
New York, NY 10036