Hummus:
Blend all ingredients, except chickpeas and water, in food processor.
Add the chickpeas and blend until smooth. Slowly add water until the desired consistency is reached. Set aside.
Tzatziki:
Shred zucchini with the shredder attachment.
Add yogurt, oil, dill, lemon juice, garlic, and salt to food processor bowl. Pulse until well blended. Set aside.
Dip:
Spread hummus onto bottom of serving dish, then cover hummus with a layer of Tzasiki sauce.
Sprinkle with cucumbers, tomatoes, olives, red onion and cheese.
Serve with Pita chips.