Preheat the oven to 350 degrees F (175 degrees C).
Combine olive oil, orange zest, paprika, cinnamon, cumin, and pepper in a small bowl; mix to form a paste.
Apply paste to the top and sides of the roast. Feel free to apply all around the roast if desired. Place pork in a roasting pan.
Roast in the preheated oven until an instant-read thermometer inserted into the thickest part of the roast reads 145 degrees F (63 degrees C), 40 to 50 minutes.
Remove from the oven and tent with foil. Allow to rest at least 10 minutes before slicing and serving.