In a bowl, lightly mash the chickpeas with the back of a fork, or pulse them briefly in a food processor or countertop blender if you have one. Stir in the salt, ground cumin, ground coriander, crushed red pepper, lemon juice, and olive oil.
In a small bowl, stir together all the ingredients for the cilantro sauce.
Layer up the yogurt, the pea shoots or arugula, chickpea mixture, cilantro sauce, and pickled or raw red onion on the breads and serve.