Heat a grill or grill pan to medium-high heat. Once hot, add jalapeños and grill on all sides, approximately 1-2 minutes per side. Slice into rings and set aside. Leave the grill on for the burgers.

In a small bowl, whisk together ingredients for spicy bourbon BBQ sauce. Set aside.

In a large bowl, add ground beef, ground pork chorizo, 1/2 tsp salt, 1/2 tsp black pepper, 1/2 tsp red pepper flakes and 1/2 tsp garlic powder. Mix together with your hands until combined. Divide the beef mixture in half and form two large 1/2lb patties.

Grill hamburger patties until they reach your desired temperature, approximately 4-5 minutes per side for medium. In the last two minutes of cooking, top patties with slices of hot pepper jack cheese. Cover using a metal bowl if you are using a grill pan (or close to the lid to the grill) to help the cheese melt faster. Once cheese is melted, remove from heat.

To assemble the burgers, add the patties to the bottom halves of the rolls. Top with grilled jalapeños and a generous teaspoon or two of the spicy bourbon BBQ sauce. Top with the other halves of the buns. Serve immediately.