If that's the one that is also known as a Christmas Bell, then yes, they grow like weeds.

I had two that were almost trees by May a couple years ago.

Yes, I've had the same experience. This one is a heavy producer. I'm growing it again this year because it is a good one for stuffing. The pod shape is so unique that the pods attract folks who aren't even chileheads.

I am also growing it. I had two of them in a 4" pot. Today I took them out , separated and planted them in a container. Once they grow new roots and gt established , I will top them to stay short and bushy.