Bring a large pot of lightly salted water to a boil. Place pasta in the pot, cook for 7 to 9 minutes, until al dente, and drain.
Preheat the oven broiler. Season steak with garlic powder, salt, and pepper; rub with olive oil. Place steak in a baking dish, and broil 5 minutes on each side, or to desired doneness. Slice diagonally into thin strips.
In a bowl, toss the cooked tortellini, lettuce, olives, croutons, tomatoes, and dressing. Top with steak strips to serve.
