(WXIA) -- Krispy Kreme is preparing for its 77th birthday. To celebrate, it is offering customers a special deal on its signature donut, the Original Glazed."Made from a recipe dating back to the 1930's, our uniquely delicious Original Glazed donuts help set Krispy Kreme apart from any other sweet treat retailer," Krispy Kreme chief marketing officer Dwayne Chambers said in a release.On Friday,...