Letters credit from George Olshevsky's Marvel Comics Index.
Job number revealed on original art. Info per Nick Caputo: https://comics.ha.com/itm/original-comic-art/complete-story/don-heck-tales…
In this story Pepper gets a makeover and is consequently redrawn as a more attractive woman.
Info from Stéphane Petit via the GCD Error Report (September 28, 2009).
Lettering credit is from the reprint in Marvel Collectors' Item Classics #5.(Checked by Merlin Haas from that issue, October 1, 2009.)