This is what they looked like before they hit the grill-
I substituted Jalapeno peppers for the hatch chiles and instead of trying to measure out the long list of spices I just scooped out a tub of jalapeno flavored cream cheese, dumped in a couple of handfuls of shredded cheddar and mixed in the rub that I had on my desk for the stuffing. Way easier IMO.
The cooking instructions from the recipe were spot on, so follow those and you’ve got a simple killer game day appetizer. If this stiff can prepare them on his desk at the dock, you should be able to pull this off with ease.