Wow, your plants look great!
I just ordered a variety of different pepper plants 6-8" tall, considering I started my seedlings way too late.
A 6-8" plant usually takes 2-3 months to grow correct? Considering mine are only MAYBE 2" now and it took almost 1 month to get there.
Depends on the pepper species...I'd say that a little over 2 months is pretty accurate in terms of a chinense species getting to around 6 inches tall (I planted my chinenses roughly 40 days ago and they are between 2 and 3.5 inches tall). The Anaheims and Cayennes (annuum species) that I planted at the same time are more than twice that size though...they are currently averaging between 7 and 9 inches tall now (picture below).