Starbucks on Tuesday ousted CEO Laxman Narasimhan, replacing him with Chipotle's Brian Niccol, who is being tasked to turn around the company as it contends with growing unionization pressures and slowing sales in back-to-back quarters. The company faced immense pressure to make significant changes, both from activist investors and former CEO Howard Schultz, who posted on social media in May that the company needed a strategic overhaul. Niccol, who is stepping down as Chipotle CEO to take over the coffee gi ...