This recipe made the most amazingly juicy chicken!! I don't know what it was but the marinade made a "skin" on the meat, keeping the juices sealed in during grilling. The flavour was good - a little salty & not at all hot. I had already discarded the seeds when I saw the note about adding the seeds for some heat. I cooked the breasts whole & wish I had thought to save the peppers from the marinade & fried them up as a little side. Unlike the photo posted by TeresaS, my chicken ended up a very dark brown.
This is outstanding! It has a nice bite to it. I was really surprised that the spices didn't cause it to taste weird. Instead they gave it a smoky flavor. I should have sliced the jalapeÃ±os in circles, but no! I sliced them in strips. This is so tender and moist. I cooked them on the grill. Thanks little_wing for posting.