Preheat the oven to 400 °F
Season the pork with salt and pepper, put it in a baking dish, and bake in the oven for about 35 minutes (or until a thermometer registers an internal temperature of 160 °F )
Meanwhile, cut up the apples and put them in a saucepan with the brown sugar, lemon juice, cinnamon, and nutmeg. Cook the apple mixture over medium-high heat until it boils.
After the apple mixture comes to a boil, reduce the heat to medium-low and simmer for about 20 minutes while the pork is cooking in the oven.
When the pork comes out of the oven, let it rest for about 5 minutes. Cut into slices across the grain and spoon the apples over the top.