It is well-known that when Jack Kirby came over to DC in the early 1970s and started working on Jimmy Olsen as well as other titles, that Superman and Jimmy Olsen's faces were redrawn by DC staff artists like Al Plastino and Murphy Anderson. But it appears that this practice actually started at Marvel.
I've already talked about the bizarre one-off Amazing Spiderman story that appeared in Marvel Super-Heroes #14. At least according to a note Stan appended to that story, Johnny Romita was ill and so Ross Andru was pressed into service to fill in for the Jazzy one for a single issue. But Romita apparently recovered and met the deadline, so the story was shelved.
There were a couple of oddities about this story. First, although Andre's longtime inking partner, Mike Esposito, was already inking ASM under the nom de plume of Mickey Demeo, he was not given this assignment; instead the tale was inked by Bill Everett. And second, it looks very much like Romita redrew the faces of Gwen and Mary Jane here: