Growth slows at fast casual restaurants By: CNBC.com News March 12, 2015 at 10:15 AM EDT While many fast casual restaurants are still posting respectable earnings, the guidance is getting more conservative. Read More >> Related Stocks: Chipotle Mexican Grill El Pollo Loco Fiesta Restaurant Gp Habit Rest Noodles & Company Potbelly Corp Shake Shack Inc Zoe's Kitchen Inc