I wouldn't redo your first chapters, because we all progress and evolve with time. It's normal.
There's not much of a difference between the first episode and the latest one. I can see it's a bit more polished, but the style doesn't jump all over the place. If it was drastic, I'd say to redo it.
I tweaked my first chapter when I reprinted a couple of years ago. But, I didn't redo all of it. It would be too much work and I progressed so much in 5 years that it would be too noticeable to go that far back. Tweaking, wasn't so noticeable. As long as you evolve gradually, it's not that noticeable from one chapter to another. It's only really noticeable when you look back many years. Generally, readers like to see how an artist grows as the story moves forward.
Sometimes, not all pages are amazing, but if the overall artwork is consistent, you're good. I know some pages of my first chapter are not great, but the first few pages are strong, so I'm good. We all have our good days and our bad days.