Line a 15x10x1-inch baking pan with foil; set aside.
In a small bowl, combine brown sugar, pumpkin pie spice, garlic powder, paprika, salt, and ground black pepper.
Brush pork with olive oil. Press brown sugar mixture on all sides. Place on prepared baking sheet.
Roast, uncovered, at 425°F for 30 to 35 minutes or until internal meat temperature is 145°F.
Remove pork from the oven and tent with foil; let stand 10 minutes before slicing.