Nothing particularly funny in here, but I don't think it's the worst episode ever, there were some worse ones before.
The subplot with Stewie falling in love with her mom because of her new body was not funny at all and only just weird. If you're gonna write something this weird and disturbing, at least make it a little bit funny?
The main plot with Peter becoming an alter boy was meh too and nothing funny or memorable came out of it. Even the last fight scene was meh, they could've made another funny epic fight scene like Peter vs Chicken or Chris and Meg vs the school, but the fight was short and underwhelming and J didn't even join the fight.
All in all, a very forgettable episode with meh stories and nothing funny in there, I just finished the episode and I've already forgotten what happened in the first half.
The only decent part which was kinda chuckle-worthy was the last part with the abandoned exercise equipment commercial.
I just don't get why they release the episodes like this? Why don't they just do it weekly and get it over with if they already made these episodes a year ago (if that's true, I only read it somewhere). Or if they make these weekly - which I doubt - and there was nearly a month between this ep and the last one, why don't they work on them more?
Hire new writers please or just end the show.