If using NY strip steak, place a medium non-stick pan over medium heat and add 2 tsp. olive oil. Add steak to hot pan, and cook until browned and steak reaches a minimum internal temperature of 145 degrees, 7-10 minutes per side. Rest, 3 minutes. Silce into 1/2" slices. Add to salad and combine.
If using roasted chicken breast, remove from packaging and microwave until warm, 1-2 minutes. Add to salad and combine.