Cut or shred the cooked chicken into bite-sized pieces and place it in a large mixing bowl.
Dice the avocados, halve the cherry tomatoes, finely chop the red onion, and chop the fresh cilantro.
Add the avocado, tomatoes, red onion, and cilantro to the bowl with the chicken.
In a small bowl, whisk together the fresh lime juice, olive oil, garlic powder, salt, and black pepper.
Pour the lime dressing over the chicken and vegetables.
Gently toss the ingredients until evenly combined, being careful not to completely mash the avocado.
Taste and adjust the lime juice, salt, or black pepper if needed.
Serve immediately on its own, in lettuce cups, in a tortilla wrap, or over fresh greens.