Preheat oven to 425 degrees F.
In a bowl, mix together hoisin, ginger, garlic, Dijon, salt, and pepper. Add pork and cover with mixture.
In an oven safe skillet over medium-high heat, add oil. Add pork and sear, approximately 1 minute. Turn over and place in oven.
Roast pork 20 minutes. The pork is done when internal temperature reaches 140 to 145 degrees F.
Rest on cutting board, tented loosely with foil. Slice crosswise for serving.