LOS ANGELES (Reuters) - Pop singer Jessica Simpson is set to star in a television pilot in development for NBC that is loosely based on her life, executive producer Ben Silverman said on Tuesday. The comedy could be Simpson's first step back into a major acting role in more than five years. The former teen pop star is best known for her reality TV shows, including MTV's "Newlyweds: Nick and Jessica," which followed Simpson and her first husband and fellow pop singer Nick Lachey. She also served as a mentor on NBC's "Fashion Star. ...