In this articleSBUXCMGBrian Niccol steps in as CEO of Starbucks on Monday, taking over as the coffee giant's sales slump and stock price falls.Starbucks tapped Niccol in August to take over from Laxman Narasimhan, who held the position since March 2023. Niccol had served as chief executive of Chipotle Mexican Grill since 2018, turning around the fast-casual chain after a series of foodborne illness outbreaks and leading it through the pandemic. Prior to Chipotle, Niccol was CEO of Taco Bell, which Yum Brand ...