Mike Smith, executive chef at Scales, one of Portland’s hottest new restaurants, says he is leaving after just five months to work at a neighborhood restaurant that Chris Gould, chef/owner of Central Provisions, plans to open off the Portland peninsula this winter. Gould and his wife and business partner, Paige Gould, have purchased the former Borealis Bakery & Bistro at 182 Ocean Ave., where they plan to open an Italian restaurant specializing in Neapolitan pizza, handmade pastas, crudo and salads.