Shares of Chipotle Mexican Grill (NYSE: CMG) hit fresh 52-week highs last week after posting better-than-expected financial results. However, with the stock and the underlying fundamentals still well off their peak 2015 form, it’s not as if the burrito roller can afford to stand still. Chipotle is developing a pair of dessert items that it will soon begin testing in stores, hoping that catering to the sweet tooth will boost per-check averages, if not actual foot traffic.