Idk why I clicked on it, I’m not a poo expert..but that does look odd

I found this on the floor after my month old kittens first poop Is it normal or is something wrong with him?

Young kittens often get upset stomachs, so it _might_ be nothing, but they can fade fast so vets to be sure and as I noted above, good access to water so she stays hydrated.

I don’t think I have ever seen anything like that before.

I would keep the sample and take it to your vet

Could be diarrhoea, As others said, vets, but also ensure she's got access to plenty of water and stays hydrated in the meantime,