On one side of Shadyside’s Walnut Street, longtime fixture E.B. Pepper has shut its doors, a big sign in the window announcing that the owner is retiring after 37 years. Across the street, a large storefront in the Mineo Building that housed Shadyside Market & Deli, which closed in 2021, sits empty. A short walk away, another spot, once home to the Athleta women’s clothing store, is vacant as well. And right next to it, the Gap turned out the lights for good just three weeks ago, ending its long run on Walnut. They are among six vacancies blemishing the well-known street, which for decades has flourished as one of the premier shopping destinations in Pittsburgh and the region, with its eccentric blend of nationals and locals, high-end and blue collar, trendy and quirky. But given the vacancies and recent departures, some are wondering whether the fashionable thoroughfare in the heart of one of the city’s most prestigious neighborhoods is losing some of its mojo. To read more, head...