It's not any specific rules made by Ralph that don't make sense to Jack: rules themselves don't make sense to Jack:
There was a moment’s struggle and the glimmering conch jigged up and down. Ralph leapt to his feet.
“Jack! Jack! You haven’t got the conch! Let him speak.”
Jack’s face swam near him.
“And you shut up! Who are you, anyway? Sitting there telling people what to do. You can’t hunt, you can’t sing—”
“I’m chief. I was chosen.”
“Why should choosing make any difference? Just giving orders that don’t make any sense—”
“Piggy’s got the conch.”
“That’s right—favor Piggy as you always do—”
Jack’s voice sounded in bitter mimicry.
“The rules!” shouted Ralph. “You’re breaking the rules!”
When you've got a spear or a rock or a gun in your hand, what do rules mean? Might makes right in Jack's world, and who's going to stand up and challenge him? The assembly falls apart in the darkness and anarchy awaits.
I know there isn’t no beast—not with claws and all that, I mean—but I know there isn’t no fear, either.”
Ralph moved restlessly.
“Unless we get frightened of people.”
Yes. Piggy knows, and he will pay for what he knows with his life.
In chapter 5
Jack Beleives that some rules shouldn't exist because he thinks some rules are outrageous. For example where they are allowed to go the washroom , since the rule effects Jack he does not agree with it. Jack only wants power and is very eagaromatic, he disires eithera democratic leaderor for Ralphto have complete control . The main things that make sense to Jack are power and nature, Jack is very fond of the ocean and the types of tree's on the island, Jack is also not a very intelligent person so he truly does not understand some of the rules