In a large bowl, combine the shredded chicken, corn, black beans, diced tomatoes, cheddar cheese, red onion, cilantro, lime juice, chili powder, cumin, salt, and pepper. Mix well until all ingredients are evenly incorporated.
Lay out the flour tortillas on a flat surface. If desired, spread a thin layer of ranch dressing on each tortilla for added flavor.
Divide the chicken mixture evenly among the tortillas, placing it in the center of each.
Fold the sides of the tortilla over the filling, then roll from the bottom up to create a wrap.
Heat a grill or skillet over medium heat. Place the wraps seam-side down on the grill and cook for 2-3 minutes on each side, until golden brown and heated through.
Remove from heat, slice in half, and serve warm.