Kanye West -- One Crappy Homecoming ... You've Been Served! (VIDEO)

Kanye West's goodwill tour to Armenia and the Middle East came to a sucky ending for him -- moments after touching down at LAX ... he got served with legal papers.

Kanye, Kim Kardashian and North flew back to L.A. Thursday and the scene was absolute chaos. While Yeezy was running the gauntlet -- with North in his arms -- he never saw the guy in a suit sneak up behind him.

As Kanye got into his waiting SUV ... the process server reached in behind him and tossed the papers onto one of the seats. Kim followed a few seconds later, when it appears someone threw the papers out of the vehicle. The process server did not reveal the nature of the legal action.