Heat the oil in an oven-safe skillet over medium-high heat. Season the pork tenderloin with salt and pepper. When the oil is hot, add the tenderloin and cook for 1-2 minutes or until a golden brown crust starts to form. Flip the tenderloin over and cook for another 1-2 minutes or until the entire tenderloin is golden brown. 

Remove from heat. Pour about 1/2 of the sauce over the pork. Place the pan in the oven and cook for 10 minutes. Remove the pan from the oven and flip the tenderloin over. Add the remaining sauce (not the reserved 2 Tbsps) and place the pan back into the oven. Cook for another 10 minutes or until a thermometer reads 155F. Remove from oven and allow to stand for 10 minutes. Drizzle with reserved sauce and cut into 1/2″ slices. Serve immediately with a salad or vegetables.