In a small bowl, combine Greek yogurt and garlic salt. Set aside.
1/2 cup plain Greek yogurt, 1 teaspoon garlic salt
In a medium size bowl, combine avocado, tomatoes, lemon juice, and half of the cilantro. Set aside.
2 avocados, 6-8 cherry tomatoes, Juice from half a lemon, 1 teaspoon cilantro
In a skillet, brown the cooked chicken with the olive oil over medium heat for 3-4 minutes. While cooking, sprinkle with half of the cilantro. Take off of heat and add 1/4 of the chicken to each pita.