Page content won't really need to be changed outside of the lead. I feel like this is a good move because the three infoboxes look terrible, primarily it pushes down the image so much. Having one infobox with three images would make it look much better. Additionally, the page is already called Jackenstein's pumpkins on the characters category page.
I see an earlier discussion was similar to this, but it was including CH5 Pumpkin info, this doesn't, I even split that myself.
Singular title: By default, article titles should be in the singular form. MediaWiki allows for characters to be appended to links to facilitate pluralizing ([[item]]s comes out as "items"), but singularizing an article with a plural title requires piping ([[Darkners|Darkner]]). List articles such as "Unused attacks" are exempt from this rule, as most pages will link to a specific section instead of the main page (Horizontal Spades), and the plural title conveys the page's intent and scope better than a singularized title.[2]
imo I don' t really get why the wiki treats the pumpkin in Chapter 5 as its own character. it's hardly a character; it has no lines whatsoever nor relevance in the plot. it'd make more sense to have information about it in the platforming article, since it's no more than a gameplay mechanic in the platforming sections (the mechanic in question being making Ralsei a long enough platform to step on)