Put all the ingredients into a blender or food processor except chickpea water. Puree until everything is combined well. Stir with a spatula. (See the video)
Add the chickpea water and puree until smooth.
Heat olive oil in a small saucepan. Add in chili powder and remove from the heat. Drizzle directly over the hummus before serving.
Video
NOTES
If you want a thicker hummus, use half of the chickpea water.