Chipotle CEO Brian Niccol announced this week that the company is ensuring portion sizes are generous and consistent across all stores after customers aired frustrations on social media accusing the fast-casual chain of using fewer ingredients in its popular burrito bowls. "There was never a directive to provide less to our customers," Niccol told analysts Wednesday on the company's earnings call. The chief executive added that generous portions has always been a core brand equity of the fast-casual restaur ...