In a style of Art Nouveau, groovy, and organic this bulbous dieter's special looks familiar but I can't recall a specific font for an exact match.
Here some passable substitutes:
Toulouse Lautrec Theatre Antoine

https://www.myfonts.com/fonts/t26/toulouse-lautrec-theatre-antoine/
Doobie -- top half is pretty close but bottom half could use some deflating https://www.myfonts.com/fonts/canadatype/doobie/
Kush http://www.myfonts.com/fonts/ourhousegraphics/kush/
Jimi https://www.myfonts.com/fonts/canadatype/jimi/
Don

Not as close, but with some resemblance in tone:
Herold https://www.myfonts.com/fonts/hihretrofonts/herold/
Fraggle https://www.myfonts.com/fonts/bagraphics/fraggle/
Roberta http://www.myfonts.com/fonts/profonts/roberta/
Display Art Three https://www.myfonts.com/fonts/gallofonts/display-art-three/
Display Art One https://www.myfonts.com/fonts/gallofonts/display-art-one/
Don