Why so aggressive at me so suddenly?

[Cham]

This, and perhaps the meal you last fed him was too small. I've heard multiple stories of snakes doing this as a feeding response and after they get another mouse in them they calm down.

I've checked the husbandry and it looked good.
Now when I think of it, I fed him 2 mice that wasn't fully grown (they did not had full grown mice in the store so I bought what I could get)
Maybe he needs one mouse more, I will try that out.