If not using pre-cooked chicken, season the chicken breast with salt, pepper, and a little olive oil. Cook it on a grill or frying pan over medium heat for about 6-7 minutes on each side or until fully cooked. Let it rest, then shred it using two forks.
In a mixing bowl, scoop the flesh of the avocados. Add lime juice, salt, and pepper. Mash gently until it forms a chunky spread.
Lay the tortillas flat on a clean surface. Spread a layer of the avocado mixture on each tortilla.
Top the avocado spread with shredded chicken, cherry tomatoes, red onion, and lettuce leaves.
Roll the tortillas tightly, starting from one end and tucking in the sides as you go to form a wrap. You can wrap them in aluminum foil or parchment paper for easier handling.
If desired, grill the wraps for a couple of minutes on each side to achieve a crispy exterior.
Enjoy your delicious and nutritious Chicken Avocado Wrap!