Not too far are:
TAC Quick
Pizza Rustica
Caliente
Rick's Cafe
Taqueria Michoacan
El Palmar
(all within a block of the Sheridan el stop)
Then, for coffee:
Dollop (Clarendon & Gordon)
Mocha Cafe (Sheridan btw Gordon & Buena)
Mr. Salsa is popular, but I've never been there (Montrose, just west of Broadway/Sheridan)
Tweet (Sheridan, just north of Argyle)
Riques (Sheridan, just north of Argyle)
Unique So Chique (Wilson, just west of Magnolia)
Magnolia Cafe (Wilson, just east of Magnolia)
Marigold (Broadway, just north of Lawrence)
There's Urban Tea Lounge, which I've heard good things about, but never been to. Apparently up for sale, so get there while you can (Montrose, around Hazel).
Those are the places that come to mind immediately.
-gtgirl