In a large bowl, combine the shredded chicken, mashed avocado, ranch dressing, lime juice, salt, and pepper. Mix well until the ingredients are fully incorporated.
Add the halved cherry tomatoes, shredded lettuce, corn, and red onion to the chicken mixture. Gently fold the ingredients together until combined, being careful not to mash the tomatoes.
Lay a tortilla or wrap flat on a clean surface. Spoon a generous amount of the chicken and avocado mixture onto the center of the tortilla, leaving about an inch of space around the edges.
Fold the sides of the tortilla inward, then roll it from the bottom up tightly to create a wrap. Repeat with the remaining tortillas and filling.
For extra flavor, you can toast the wraps in a skillet over medium heat for 2-3 minutes on each side until golden brown.
Slice each wrap in half diagonally and serve immediately, garnished with fresh cilantro if desired.