Serena Spudich and Dan Greif, who work near Taktoukah on Crown Street, peeked out of the window on their lunch break Wednesday. Credit: Adele Haeg photo The late Khaled Badawi, with his son Ammar. Credit: Ammar Badawi photo Ammar Badawi had been planning for months to open a restaurant with his father, Khaled, when they finally signed the lease on a Crown Street storefront last summer. The property — located at 283 Crown St. — had been vacant s…