Pollo Inka and Pollo Real
Pollo Inka, 656 Elden Street, Herndon, VA, 703-481-9090 (703-871-0362?) (Metro Trip Planner - opens in new window) [Washingtonian | WaPo | City Paper]
Another good Peruvian chicken place in a Herndon mini-mall.
A reader recommends Pollo Real, again in Herndon, 1114 Herndon Pkwy, Herndon, VA, 703-796-9000, Elden Street at Herndon Parkway. [Yelp]