Cut it up and make chili? You been in Washington too long.
Let it come to room temperature. Dry rub with 50% paprika, 25% black pepper, 25% garlic salt about 15 minutes before starting. Kettle type barbecue with coal around the outside for indirect heat, or gas grill as indirct as possible, moderate heat. Cook fat side up for about 30 minutes, turn over for 10-15 minutes. Let it sit for 10 minutes and slice thin. They take slow cooking because you want to let the inside get warm and finish cooking while sitting without overcooking the outside. Fat up self marinates.
Serve with pinquito or red beans, maybe whole pintos, fresh sweet corn (white if you can get it) and real sourdough bread
This is a cut that doesn't need too much to make it right. The flavor and texture don't need enhancing or tenderizing if done right. The idea is to get a crust on the outside trapping the juices in and when you slice thin you don't overpower anything with the paprika, pepper and salt.