You can find original article here Nrn. Subscribe to our free daily Nrn newsletters. Wingstop’s first quarter proved just how unforgiving a brutal winter can be for some restaurant concepts. And, also for concepts with a heavy mix of lower-income consumers who are struggling amid a relentless inflationary environment.  Wingstop’s domestic same-store sales reported Wednesday morning fell 8.7%, marking the 7th straight quarter of decelerating comps and the third straight quarter of worsening two-year ...