Atlantans flock to Chick-a-Biddy in Atlantic Station for lunch, dinner and weekend brunch for the healthy and affordable pastured-poultry dishes, sirloin burgers, fish tacos, falafels and other specialties. This weekend, let’s focus on legs and thighs -- the ones crossing the 9:30 a.m. start line and walking 1.5 miles in Walk Now for Autism Speaks at Atlantic Station. This organization is near and dear to Chick-a-Biddy chef-owner Shaun Doty, and his eatery is an event sponsor. Brunch service begins at 10:30 a.m. Sunday morning. Stop in after the walk for cold libations, almond pancakes, a protein scramble or something equally satisfying on the brunch menu.