Combine first 3 ingredients. Rub olive oil evenly over flank steak; sprinkle with seasoning blend. Cover and chill at least 4 hours.
Grill, covered with grill lid, over medium-high heat (350° to 400°) 7 to 8 minutes on each side or to desired degree of doneness. Cut steak diagonally across grain into thin strips. Serve with Salsa.