Anthony featured on an episode of The Simpsons called ‘Krusty Gets Kancelled. (Series 4, episode 22 -last one in the series). It first aired on May 13, 1993.
The outline of the episode is that Krusty’s show gets cancelled following the arrival of a new puppet, called Gabbo who becomes much more popular than the Klown. Bart Simpson tries to get Krusty his show back by enlisting the help of a number of stars to perform in a come back special- the Chili Peppers are one of those acts. They appear in several scenes with Anthony saying a couple of lines himself and the band perform a few seconds of the chorus of ‘Give It Away’.
Here’s a brief clip of the dressing room scene: IMG_0733 The quality & sound is awful (iPhone in front of a very old TV but it might be better than nothing if you can’t find another clip online) but it’s the scene where Anthony says a solo line.
A full synopsis with screen caps is on The Chili Source if you want to find out more!