When he’s off duty from his Michelin-starred Atlanta restaurant Lazy Betty, chef Ron Hsu often turns to simple comfort foods inspired by both his Georgia upbringing and Chinese heritage. This quick, frugal recipe is adapted from one such dish featured in his new cookbook, “Down South + East” (Abrams, $40). His version starts with Chinese egg noodles, which can be tricky to find in some supermarkets. But instant ramen noodles make a fantastic substitute. Scrambled eggs furnish