The great thing about your idea is you can pretty just do it. You can start a blog, IG account, FB page just to see how it goes. Very little money involved.
Not sure if I would follow a breakfast IG account or blog (I'm not THAT into breakfast), but I follow a couple of accounts for chocolate, so I think some people would. People like those niche things.
I once had a blog that rated hotels by their gym (this was before IG). The surprising thing was there were a LOT of followers. I ended up closing it down because I didn't have the time to maintain it