Place the cubed cooked chicken and diced red onion in a large mixing bowl.

Add the diced avocado and immediately drizzle with lime juice to prevent enzymatic browning.

Season the mixture with salt, black pepper, and garlic powder.

Gently fold the ingredients together using a spatula, lightly mashing approximately one-third of the avocado pieces to create a creamy binding texture.

Fold in the minced cilantro until evenly distributed.

Serve immediately at room temperature or chilled.