And Hector knows good and well Nutella is no reason to go pulling a trigger. Especially since it's Jack and he's got that fussy little conscience to worry about that...

Well. Needless to say that he is not in the slightest bit worried at the gun pointed at his face.

So completely unworried, is he, in fact, that he reaches up to yank that stupid bloody pistol down with the left arm, the right pulling back, back...

And that's it. That's literally the punchline, as he punches Jack Sparrow right in his stupid punchable face. And he doesn't pull that punch at all, no matter how bony his own knuckles are because Jack completely deserves it. And that done, he plucks away the jar of Nutella before Jack can do something stupid like drop it, before brushing past.

And that is why you don't headbutt Hector Barbossa.