Which bulb do I need for JMC2430WP01?

I'm not sure what compatibility checker you're using (iFixit doesn't have one, so the word "Your" confuses me), but according to Jenn-Air itself, you've got the right bulb. Here's what they have to say about it.

Jenn Air JMC2430WP01 Microwave Parts - Ships Today! 365-Day Returns

I'd definitely shop around for that bulb; Jenn-Air wants almost $29 USD for it but other sites have it for half that price, and I'm almost certain you should be able to find it even cheaper than that; check several sites including places like eBay, Amazon and AliExpress among others.