In a large mixing bowl, combine the shredded chicken, Greek yogurt, chopped cilantro, lime juice, lime zest, garlic powder, cumin, salt, and pepper. Mix well until the chicken is thoroughly coated with the yogurt mixture.
Gently fold in the diced cherry tomatoes, bell pepper, and red onion until evenly distributed.
Lay out the lettuce leaves on a clean surface or plate, and spoon a generous portion of the chicken salad onto the center of each leaf.
Top each wrap with a slice of avocado and a few jalapeño slices if you like extra heat.
Carefully roll the lettuce around the filling to create wraps, tucking in the sides as you go.
Secure each wrap with a toothpick if necessary, and serve immediately.
Notes
Arrange the wraps on a platter and garnish with additional lime wedges and a sprinkle of cilantro for a fresh, vibrant look.