I don't think it'll piss off viewers; stuff like this is more likely to run the risk of folks losing interest.
Chapter 2 is only 5 pages in, which to me isn't a big deal. A couple of pages that aren't paced perfectly is something that's gonna happen sometimes when you're telling a long-form story -- sometimes you're going to make mistakes. It's okay to talk about stuff, and it's okay to explain some stuff -- and if you've decided this scene isn't helpful, you can cut away from it earlier than you'd originally planned, rather than striking it from the record and saying "WAIT, NO, PRETEND THAT DIDN'T HAPPEN."
I had one scene in my comic where I felt that I'd made a big mistake in how I'd introduced a character -- like I'd revealed too much of his arc too early and given an impression of him that ruined what I was going to do with him. But I thought it would be ineffective to go back and tell my readers "hey, pretend this other thing happened instead" -- that sort of thing takes you out of the story just a little bit -- so instead I looked forward and reworked future appearances of the character to compensate for the things I'd done imperfectly; now, I'm happy with his role in the story again!
Honestly you're early on enough that I think you can go whichever route you want -- work with what you've done, or go back and redo the start of the chapter. I don't think you'll get backlash, but you will pull your existing readers out of the story a bit. I think it's okay to make mistakes in storytelling and work with them as you move forward, just as it's okay for your art to be imperfect and improve as you go. So, it's basically up to you whether it's worth it -- if you go "some of my existing readers might be taken out of the story or lose interest, but this scene is important enough and it's worth it to me to change the way this scene went down for the future completed story" then go for it!