The Adventures of Ozzie and Harriet - "The Pills" (1952 Season 1)

Ozzie decides to diet so he can fit into a pair of size 33 pants.

Director: Ozzie Nelson
Writers: Don Nelson (television play), Bill Davenport (television play)
Stars: Ozzie Nelson, Harriet Nelson, David Nelson, Ricky Nelson

https://www.imdb.com/title/tt0758966/?ref_=tt_ep_nx