Preacherhas always been a show where the quality varies wildly from season to season. Season 1 was overall very good but felt like it was trying too hard to distinguish itself from its source material, which caused the characters to suffer. Season 2 felt bloated with 13 episodes instead of the first season's 10, not helped by the fact that most of the second season was filled with useless padding that would fill an 8 episode season.
But Season 3 felt like the show was running on all cylinders. It went back to 10 episodes instead of 13, several interesting plot threads were being explored, and the show got its zany charm that was sorely missing in the second season back. Minus a few missteps, this was the best season of Preacherso far.
*Spoilers for Seasons 1 and 2, and Season 3 Episode 1 of Preacher below. This is your one warning.*