Sprinkle steak with seasoning. Grill 5 min. on each side or until medium doneness (160F), adding corn to grill the last 5 min. and cooking until tender and golden brown, turning occasionally.
Remove steak and corn from grill; cover steak loosely with foil. Cool corn 5 min.; cut off kernels with sharp knife.
Cut steak across the grain into thin slices.
Cover 4 plates with salad greens; top with avocados, corn, crushed chips and cilantro.