Preheat oven to 475°F.
In a bowl, stir to combine garlic, rosemary, olive oil, salt, lemon zest, and pepper.
Evenly spread the mixture over the pork loin and place in a large baking dish or roasting pan.
Place it in the oven and roast for 30 minutes. Reduce heat to 425°F and continue to roast for 1 hour until the juices run clear and the internal temperature reaches 155°F.
Allow to rest on a carving board for 10 minutes before slicing and serving.
Recipe from Lucero Olive Oil