Zapotec? What is this pepper?

[MuddyBuckets]

Growing some "Zapotec" jalapenos from seed swap last year and the seeds germinated fine, grew and were transplanted into a 5 gallon bucket and doing well. Plant is prolific with loads of peppers, some going red at a small size and a few growing larger then red.

I've grown hot peppers for a few decades and don't think these are a jalapeno. Mildly hot with not too many seeds and ribs inside. Any ideas on what this "Zapotec" pepper is? Strange growing plant, spindly and leggy, not stout like a normal pepper plant.