Generally anyone who reads comics has probably come across a Chick tract at least once in their life. Heck, even people who don’t read comics might across one, as they’re distributed in churches, Christian bookstores, and evangelical folding tables set out in public places (like the one in the Times Square subway station, in the 7 train passageway leading to the Port Authority). They’re ubiquitous and controversial (especially if you’re Catholic). For that reason, Chick tracts are some of the most parodied publications on the Internet, especially the Dark Dungeons installment, in which we find out that Dungeons & Dragons is a gateway to occult worship.

A panel from Dark Dungeons, and the corresponding parody from Darque Dungeon, in which role-playing is a gateway to the goth scene.
Less of a parody and maybe somewhat of a homage is Chemical Salvation?, which uses the Chick tract format to tell the story of Lysergic acid diethylamide—popularly known as LSD.
The comic is fairly straightforward, outlining the origins of LSD in a lab, the early research, and the initial positive reaction to the compound—including the more religious applications of LSD usage. However, the comic is somewhat biased, as it briefly skims over the “casualties” of psychedelics and pretty much condemns the anti-drug movement without the same careful deconstruction that it gave to the drug’s positive effects.
However, that makes it even more of a spot-on parody, all the down to the final page, where it proudly displays the logo of “Trick Publications.”