which fast food restaurants are the unhealthiest?
["Sonic. Nearly 50 percent of Sonic Corp (NASDAQ: SONC)'s menu items contain at least 1 gram of saturated fat, and 10 of Sonic's hamburgers have more than 1,100 calories, making Sonic the least healthy fast-food chain on 24/7 Wall St.'s list.", "Carl's Jr. ... ", 'Whataburger. ... ', "Quizno's. ... ", "Arby's. ... ", 'Jack in the Box. ... ', "Wendy's.", 'Chick-fil-A. ... ']