Which host of American Top 40 referred to Jon Peter Lewis as JPL?
Jon Peter Lewis:  He was frequently referred to by the judges and Ryan Seacrest as JPL. Ryan Seacrest:  Seacrest is known for hosting the competition show "American Idol", the syndicated countdown program "American Top 40", and the KIIS-FM morning radio show "On Air with Ryan Seacrest".
Ryan Seacrest