Mix ground beef with parsley, onion, green onions, garlic powder, cumin, salt, and pepper.
Spread a thin layer of beef mixture over each tortilla.
Sprinkle shredded mozzarella evenly on top.
Roll each tortilla tightly into a log.
Slice logs into 1-inch pinwheels.
Thread pinwheels onto skewers.
Grill over medium heat 12-15 minutes, turning occasionally, until cooked through.
Mix parsley, chili flakes, oregano, garlic, vinegar, and olive oil into a sauce.
Brush hot pinwheels with the herb sauce and serve.