In a medium bowl, combine the orzo, olive oil, feta, lemon, dill, parsley and salt and gently toss to combine.
In a large bowl or serving platter, arrange the lettuce leaves and red endive then layer the shredded chicken, orzo, cucumbers and bell pepper, olives and grilled zucchini in small piles together.
Top with avocado and drizzle dressing on top to your liking.
Alternatively, you can chop the lettuce, then add all the ingredients to a large mixing bowl, toss and serve.