High-income consumers helped Chipotle Mexican Grill, Wingstop and Sweetgreen report strong sales this quarter, bucking the broader consumer slowdown that's been hurting other eateries.As a whole, the restaurant industry has seen sales slump and traffic decline as customers pull back their spending. McDonald's, Starbucks and KFC owner Yum Brands were among the restaurant companies that reported a weak start to 2024.McDonald's CEO Chris Kempczinski said diners are hunting for deals and good value; the chain i ...