Why so aggressive at me so suddenly?

[Cham]

Hi all, I've had my first ball python male for 26 days now, he is 7 month old now and I've never had any problem with him.
He wight 390g and eats like a horse too and I've never had problem feeding him.
I don't handle him a lot, maybe 1 or perhaps 2 times a week just to check that he is healthy.
He have never bit me or shown any sign of aggressiveness, not even in the cage.
But today I where talking to my brother on the phone and I went inside my room where I keep my snake, I started to hear like there were someone knocking on a glass.
I tough it was someone on the window but then I notice that it was my snake that stroked really aggressively at the cage over and over again at my direction. (he did it with his mouth open)
I hang up the phone and went quite.. I looked at him from distant and it looked like he was thinking "come here so I can kill you" lol..
I have never seen my snake do this. Why did he shown this aggressiveness at me so suddenly?
I've fed him for 3 days ago so I don't think he did it because he was hungry.
I thought it could be when I were talking but he kept on striking at me even when I was quite.
And I know it isn't because of shedding, he did shed about a week ago.
Could it be that he just wanted to be left alone that moment or should I check him for health problems?
Or could it be that simple that he just got angry at me when I were talking?
I'm kinda worrying that he might have hurt himself for striking that hard on the glass so many times..
What do you guys think?

[Raven01]

Double check your husbandry to make sure he isn't crabby because of environmental conditions.

[alykoz]

Double check your husbandry to make sure he isn't crabby because of environmental conditions.

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.

[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.