Question: Which host of American Top 40 referred to Jon Peter Lewis as JPL?
Related documents: [0]  [DOC] Ryan John Seacrest (born December 24, 1974) is an American radio personality, television host, and producer. 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". He began co-hosting "Live with Kelly and Ryan" on a permanent basis May 1, 2017. [END] 
[1]  [DOC] Jon Peter Lewis (born November 7, 1979, Lincoln, Nebraska) is an American singer and songwriter, and was one of the finalists on the third season of the reality/talent-search television series "American Idol". He was frequently referred to by the judges and Ryan Seacrest as JPL. [END] 
Answer: 
Ryan Seacrest
Ryan Seacrest