Cut off the ends of the cucumbers. Cut each cucumber crosswise into 6 rounds and turn the pieces so they're flat. Gently scoop out some of the flesh from the top of each cucumber round, making a cup.
In a food processor or blender, make the hummus by combining the chickpeas, oil, water, lemon juice and salt. Puree, adding more water if needed for creaminess. Stir in black olives. Spoon the mix into the hollowed out part of each cucumber round. Arrange on a serving tray. Enjoy!