Preheat the oven to 375°F
Pat the pork loin dry with paper towels
Trim excess fat if needed
Rub the pork loin with oil
Season with salt, pepper, and desired spices
Place the pork loin in a roasting pan or baking dish
Insert a meat thermometer into the thickest part
Bake until the internal temperature reaches 145°F
Remove from the oven
Let rest for 10 to 15 minutes
Slice and serve