1. Preheat oven to 350 degrees. 2. Cut tenderloin horizontally into 8 even portions. 3. In a small bowl combine next 4 ingredients, (chili powder, pepper, cornstarch and garlic salt). In an additional medium bowl combine onion and parsley. 4. Rub chili powder mixture evenly on tenderloin portions then roll outside edges in onion mixture. 5. In an oven safe skillet, heat oil over medium-high heat. Cook tenderloin portions cut side down, approximately 3 minutes on each side or until golden brown. 6. Transfer skillet to oven and bake 7 to 10 minutes or until desired degree of doneness.