Battle peri peri has been fully engaged since the end of May, when the mega chicken chain Nando’s opened its first Chicago location on Randolph. The second outpost opened in Lakeview last month, and so it seemed the time was nigh to evaluate the South African chicken empire vs. the scrappy hometown little guy, Logan Square’s esteemed Macanese restaurant, Fat Rice, which for a few months now has been offering two varieties of peri-peri chicken to go at lunchtime.