Trim silvery skin from pork. Mix seasonings together in a small dish, then rub into the meat.
Preheat oven to 425 degrees.
Heat olive oil in a large, oven safe skillet. Sear tenderloin for two minutes per side, then slide the skillet into the oven.
Roast for 15-18 minutes, then remove from the oven and tent with foil. Allow to rest for 5-10 minutes before slicing into 1/2 inch thick medallions.
Serve immediately.
Notes
Make sure and use an oven safe skillet such as cast iron for easy transfer to the oven.
Pork can be safely eaten at 145 degrees. You can remove it from the oven at 140 degrees, tent and rest, and the temp will rise to 145.
Depending on your oven and the size and thickness of the pork, it could take as little as 12 minutes or as long as 18-20 minutes. Be sure to check the temperature at the 12 minutes mark.