In a saucepan, combine chicken and water to cover. Bring to a boil, stir in Cubitos En Polvo and sazón, lower heat and simmer for 20 minutes. Remove from heat.
Combine all vinaigrette ingredients in a blender and process until smooth. (Or whisk all ingredients together in a bowl). Set aside.
Drain chicken and cut into bite-size pieces. In a bowl, mix chicken with remaining ingredients. Add vinaigrette, toss, and add salt and pepper to taste. Top with diced avocado if desired.