Two fruits per node in capsicuum annuum?

Wit a lot of what I have learned here and read in my own findings, Annuum generally produce 1 fruit per node, Are the seeds OP or pure? If they are pure, I would think they are not cayenne.. But weird things happen. And I could be wrong LOL

That some big flowers not to be the cayenne unless you have a cross

Thanks for the answers. According to this, it should at least be a possibility that there are varieties of capsicum annuum out there, that irregularly produce 2 fruits on one node: 
https://link.springer.com/article/10.1007/BF00021903
 
I got the seeds as a gift, along with Cayenne there also were Carolina Reaper, Scotch Bonnet and so on in the set. I already can tell that the "Scotch Bonnet" is really something else, because the leafs are rather smooth and narrow and there's mostly one fruit per node and it should be a Chinese to be a real one. I'm starting to regard them all as impure mystery seeds at this point and I will get seeds from a proper source next year.      

I've seen that a few times with my goatsweed (an annuum) mostly early in the season then it goes to one per node as the season progresses.

hogleg said:

I've seen that a few times with my goatsweed (an annuum) mostly early in the season then it goes to one per node as the season progresses.

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+1. I had this happen last year with an Orange Bell. The first node had 3 buds but the rest were singular.