Chipotle Mexican Grill (NYSE: CMG) has been a big winner during the pandemic, but its third-quarter earnings report made clear why the fast-casual restaurant chain is one of the best in the industry. Those improvements came at a time when the company is still dealing with a number of pandemic-related challenges, including supply chain constraints, labor shortages, wage and product inflation, and the delta variant. The growth of the digital channel and Chipotlanes, the company's version of drive-thru, give it the ability to penetrate parts of the country and real estate models that a traditional Chipotle wouldn't allow for.