When Taco Bell's CEO heads to Chipotle, expect the chain to start taking more risks By: CNBC.com News February 14, 2018 at 13:07 PM EST Starting March 5, Chipotle Mexican Grill will have a new CEO, Brian Niccol. Read More >> Related Stocks: Chipotle Mexican Grill Grubhub Ord Shs Harley-Davidson Procter & Gamble Yum Brands