Tasty pork can be rubbed down with spices and then refrigerated before cooking if you're busy and want to "do ahead" as they say. Be sure to let it warm back up to room temperature before cooking, though.
Combine dry ingredients and mix well. Rub it on the tenderloin.
Heat the oil in a large skillet over medium-high heat. Add the tenderloin and brown it on all sides.
If your skillet is oven-proof, transfer it to the oven. Otherwise, place the tenderloin on a roasting pan. Cook for 15 minutes or until a meat thermometer reads 140º.