Star Trek: The Next Generation S7E10 “Inheritance”
In case the joke is not obvious: While in universe, this is technically “AI art” in the sense that Data (who is an artificial being) had painted it, in reality, that episode came out in 1993, so that prop was undoubtedly painted by a human.
spoiler
Voyager S7 E20: Author, Author
The doctor (an EMH computer program) writes a holonovel titled Photons Be Free
The above screenshot is from that holonovel, when Captain Jenkins murders an injured crew member during medical triage.