Hollis Johnson Chipotle Mexican Grill recently tapped former Taco Bell chief Brian Niccol as their new CEO in an effort to revive the flagging fast-casual brand. There are three relatively simple tweaks Niccol can try to bring customers back to the chain: Lower guacamole prices, introduce more limited-time offers, and improve the chain's beverage menu. For the first time ever, Chipotle Mexican Grill will get a new CEO.