Really happy I gave RetroDiffusion a try! The extension is an awesome starting point, especially if you work in Aseprite. After trying the website, though, I found myself using that even more because it offers a lot more flexibility.
Also, huge shout-out to the developer. He replies incredibly fast, are genuinely friendly, and have been extremely helpful every time I've reached out. That kind of support is rare.
Definitely worth checking out if you're into AI-assisted pixel art.