Richie Buxo/Splash News Online
08/18/2011 AT 06:00 AM EDT
is embracing her temporary life in Atlanta – starting with the food! In town to film What to Expect When You're Expecting
, the actress enjoyed a southern-themed lunch with her mom on the patio at South City Kitchen. The pair shared fried green tomatoes with goat cheese, as well as fried okra, and also got a surprise visit from costar Chris Rock
, who was passing by the restaurant and stopped in to say hello. "The hugged and took pictures with bystanders," a restaurant source says.