- Preheat oven to 325°F. Place chicken in even layer on rimmed baking sheet. Bake, flipping halfway through, until fully heated through, about 14 to 16 minutes.
- Layer cooked chicken, cherry tomatoes, avocado and red onion in lettuce leaves. Top with ranch and blue cheese (if using). Serve and enjoy.
Tip: Packaged sliced red onions can usually be found in the produce aisle of your local grocer.