This is not a place to get food. Don't do it.
This is the first thing you see past security. It looks like it serves food, but all it has is those gross pre packaged sandwiches. It's not worth it.
What they do have are $5 beers. And an excellent spot for people watching. And an AT&T wireless hotspot. Screw that Boingo nonsense that works 25% of the time.
If you're flying out of Terminal 3, do yourself a favor and bring snacks. The choices are all meh at best and a section of the terminal is usually closed, further reducing your options.