Preheat oven to 350 degrees Fahrenheit
Remove pork tenderloins from the marinade and pat down the tenderloins with paper towels to remove any excess marinade from the outside of the pork.
Place pork tenderloins on roasting pan.
Brush tenderloins liberally with BBQ sauce and place into the preheated oven for 15 minutes.
Heat saute pan until fairly hot. Remove from heat and add sesame seeds. Seeds will begin to toast and pop. Keep the seeds moving to keep them from burning. When seeds look toasted, remove from pan onto a plate or bowl until needed.
Remove the pan from the oven. Turn over the tenderloins and brush the pork with barbecue sauce.
Return the pan to the oven for another 15 minutes.
Remove the pork from the oven. Brush with additional barbecue sauce and allow to rest for 5 minutes before slicing.
Slice pork tenderloins about 1/4 inch thick or as desired
Place the sliced pork tenderloins on a serving dish, trying to keep them lined up. Brush with additional sauce if needed.
Sprinkle top of pork tenderloin with toasted sesame seeds and garnish with sliced scallions.
Serve with your favorite sides and additional barbecue sauce.