The legality and ethics around using AI generated content is questionable, this is more for like visuals like I don’t care that much if you use github copilot, but AI generated imagery is legally questionable and also tends to lower the spirits of artists putting huge amounts of effort into their projects. I can’t stop you from brainstorming or prototyping with it, but it shouldn’t be in the final game. I’m a solo dev too and I’m not great at art, but I always prefer making my own even where I’m inexperienced since a game jam is an opportunity to improve and get better at your art.