1. Preheat oven to 400° F.
2. In a medium skillet, heat 1 Tbsp oil on medium-high. Add pork & brown both sides. Set aside.
3. In a medium bowl toss potatoes in remaining 1 Tbsp oil.
4. Lightly coat a glass baking dish with cooking spray. Spread pork & potatoes evenly. Top with juice, sliced oranges & cinnamon.
5. Cover with foil & bake 20-25 minutes, or until pork is done.