Preheat your oven to 350°F (175°C).
Mix salt, pepper, garlic powder, rosemary, and thyme in a bowl.
Rub the olive oil over the frozen pork loin. Then, press the seasoning mix onto all sides of the loin.
Place the pork loin on a roasting pan. Pour chicken broth around the pork in the pan.
Roast in the preheated oven. Expect to cook for about 50% longer than a thawed loin, approximately 1.5 to 2 hours, depending on the size.
Baste the pork loin with the pan juices every 30 minutes.
Use a meat thermometer to ensure the internal temperature reaches 145°F (63°C).
Let the pork loin rest for 10-15 minutes before slicing. This helps the juices redistribute.