Natrol, Inc. finds itself back in compliance with Nasdaq Marketplace rule requiring a majority of independent directors on its board, the company has announced. James R. Peters was appointed to the board July 3 as an independent director, meeting the requirement that four of the seven directors be independent. The Chatsworth-based manufacturer and distributor of branded nutritional products received notice July 7 from Nasdaq that it was back in compliance. The Nasdaq letter indicated that staff considers the matter closed.