Ground Beef Gyroll

Ingredients

• 2 -4 tablespoons oil
• 1 lb lean ground beef (or a combo of beef and ground pork)
• 2 tablespoons minced fresh garlic
• 1 large onion, finely chopped
• 1 teaspoon dried red pepper flakes (optional)
• seasoning salt
• pepper
• 1 1/2 tablespoons dried oregano
• 2 teaspoons cumin
• 3 tablespoons chopped fresh parsley
• 1/4 cup grated parmesan cheese
• 1 (10 ounce) can mushrooms, well drained and coarsely chopped
• 7 -8 ounces feta cheese (can use less or to taste)
• 1 1/2 cups chopped olives, divided (green or black)
• 1 large prepared pizza dough (or use two 10-ounce cans refrigerated pizza crusts)
• oil, for brushing
• 1 teaspoon garlic powder, divided (or to taste)
• 4 tablespoons grated parmesan cheese, divided (or to taste)