Oil your grill grates and heat grill to high heat. Prepare for both direct and indirect cooking.
Pat the pork tenderloin dry, and season with garlic powder and black pepper.
Cut bacon strips (check notes below). Wrap the pork tenderloin with bacon, and secure with toothpicks.
Place pork tenderloin on the grill. Grill over high heat for 6 minutes. Flip, and grill on the other side for an additional 6 minutes.
Make the glaze: While the pork is grilling, combine the ingredients for the bourbon glaze in a small sauce pan. Allow to simmer over low-medium heat for about 5 minutes.
Transfer the pork tenderloin to indirect heat OR lower the temperature on your grill burners to low heat.
Baste with glaze and allow to grill for an additional 3 minutes per side, continuously basting with the glaze.
Remove the pork when the internal temperature reaches 145 degrees Fahrenheit using an instant read thermometer.
Transfer the grilled tenderloin to a platter and allow to rest for about 5 minutes before slicing.
Serve warm and enjoy!
Notes
I like to cut the bacon down to 3/4 strips for the middle section of the pork tenderloin, and 1/2 strips for the skinnier ends.