Those look delicious! :-)
As for the speed, you get better at it with practice. Took me an hour and a half straight to seed 150 serrano peppers for jam. The last 50 went quicker than the first 100. :dunno: They were super ripe though (almost all red) and used a spoon instead of a knife on the innards.
I find for ABTs, a really small and sharp knife is the best for dexterity. And cutting the peppers in the bomb bay door style (a cut 1/2 way through the pepper at the top and 1/2 way through the pepper at the bottom, then link those two cuts with a cut along the length of the pepper, fold the doors open and trim out the seed cluster.) It's quicker on bigger peppers (poblano) than smaller ones. Poblanos too mild? A whole jalapeno will fit inside a poblano.