Preheat oven to 425°; heat 1 tsp oil in skillet over med-high; pat pork dry, season with salt/pep + sear 2-3 min per side; place pork on sheet pan; roast 25-30 min until internal temp is 145°; rest pork on cutting board 5 min

Meanwhile, heat 1 tbsp oil in skillet over med-high + cook brussels with salt/pep 4-6 min until tender, stirring minimally to ensure browning; set aside

Toast 2 buns until warm + golden

Slice pork into ½ inch pieces + divide ½ of pork onto buns with brussels, 4 slices cheese + 4 tbsp sauce (save leftover pork for lunch tomorrow)