Spartanburg, SC-based Denny's, the largest full-service family restaurant chain in the US, has announced the appointment of Margaret L. Jenkins to senior VP and chief marketing officer with responsibility for all local and national marketing activity and product development. "Margaret is an influential brand champion with a proven track record of achieving results over her 20 years in the restaurant industry," said Nelson J. Marchioli, CEO and president of Denny's. "She maintains a strong focus on the customer and is well poised to address the challenges we face and take the Denny's brand to new levels."