If using roasted chicken breast, remove from packaging and microwave until warm, 1-2 minutes. Serve on salad
If using chicken, pat dry and cut into 1" dice. Season with 1/4 tsp. salt and a pinch of pepper. Place a medium non-stick pan over medium-high heat and add 2 tsp. olive oil. Add chicken to hot pan and stir occasionally until chicken browns and reaches a minimum internal temperature of 165 degrees, 5-7 minutes. Serve on salad.
If using bacon, line a plate with a paper towel. Place a medium non-stick pan over medium heat and add bacon to hot pan. Flip occasionally until crisp, 6-8 minutes. Transfer to towel-lined plate to remove excess oil. Crumble, then top salad with bacon.