If using roasted chicken breast, remove from packaging and microwave until warm, 1-2 minutes. Add to salad and combine.
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 and bacon reaches a minimum internal temperature of 145 degrees, 6-8 minutes. Transfer to towel-lined plate to remove excess oil. Add to salad as desired.