Reserving the liquid from the cans, drain the chickpeas in a colander (no need to rinse them). Set a few chickpeas aside for garnishing the hummus.

In the bowl of a food processor fitted with a metal blade, combine the chickpeas, lemon juice, tahini, garlic, cumin, cayenne pepper, salt, olive oil, and ⅓ cup of the reserved canning liquid. Process for several minutes until smooth and creamy. The hummus should hold its shape when you drag a spoon through it; add more liquid and process again if it seems too thick. Taste and adjust seasoning, if necessary.

Transfer the hummus to a serving bowl. Use the back of a spoon to swirl a shallow well in the center. Drizzle a little olive oil in the well; sprinkle with parsley and paprika, then garnish with the reserved chickpeas. Serve at room temperature with pita bread, pita chips, or crudités.