Quarter the iceberg head. Chop the tomato, avocado, green onion and cucumber.
Place the lettuce on 2-4 plates, depending on if you're serving as a smaller appetizer dish or as the main entree. Arrange the tomato, feta, avocado, almonds, green onion and cucumber evenly on each dish.
To make the dressing: Place all ingredients in a food processor and pulse until smooth. Add another TBSP of water if necessary to adjust to the desired consistency. Spoon dressing onto each iceberg wedge, coat evenly. Serve with pita wedges, fresh bread, or whatever your heart desires.