I'll tell you guys the story on Chef as I know it.
This figure was thought up by Hasbro as a mail away for G.I. Joe Action Stars cereal in 1987 (get the clever food tie in?), but ultimately it was decided that a chef character wouldn't be enticing to kids so they instead decided a jet pack flyer would be more exciting, and thus Starduster was born. Chef uses all the same parts as Starduster version A and includes Baroness' rifle, as well as presumably some kind of flexible apron accessory ala: Spirit. As far as I know this figure never got past the concept art stage. STA: Gi-Joe: Unproduced "Chef" Artwork