For this quick hummus put chickpeas, tahini, cumin and lemon juice into a blender and chop. Start adding olive oil until the hummus is creamy.
Spread some hummus on each tortillas and sprinkle chopped parsley/coriander over the tortillas. Cut the avocado in half, remove the stone and remove the flesh with a spoon. Cut into slices and put two or three of them on top of the hummus. Crumble some of the feta over it and fold the tortilla in half and press together slightly. Heat oil in a pan and fry the quesadillas on both sides crispy.