Mix oil, 2 tablespoons of the lime juice, soy sauce, garlic powder and Seasoning in small bowl until well blended. Place steak in large resealable plastic bag or glass dish. Add marinade; turn to coat well.
Refrigerate 15 minutes or longer for extra flavor. Meanwhile, mix ranch dressing, paprika and remaining 2 tablespoons lime juice until well blended. Refrigerate until ready to serve.
Heat large skillet on high heat. Add steak with marinade, bell pepper and onion; cook and stir 2 to 3 minutes or until steak is no longer pink. Drain if necessary. Arrange steak and vegetables over salad greens on serving platter. Drizzle with prepared dressing. Sprinkle with Salad Toppins.