In either a food processor, bowl with a stick blender, or a traditional blender; chop together the avocados, chickpeas, garlic, tahini, red pepper flakes, kosher salt, and cayenne.
While blending, slowly add in the lemon juice and olive oil. You . should have the proper consistency once done blending, but if it's still a little thick, thin with a small amount of the reserved water from the canned chickpeas while blending.