The Nashua Soup Kitchen is moving. The city Planning Board has approved a conditional use permit to move the kitchen from its cramped quarters on Chestnut Street to the Veteran of Foreign War Post 483 on Quincy Street. The kitchen serves about 1,700 meals a week. A previous plan to move the facility to a warehouse near Elm Street Middle School was turned down by the Planning Board four months ago. The members of the VFW Post have voted to sell their building on Quincy Street and move to less expensive quarters, due to declining membership.