Place the bulgur, chickpeas, onion, parsley, and mint into a mixing bowl. Add the olive oil (start with two tablespoons, and add a little more if you like), lemon juice and zest, salt, and freshly ground black pepper to taste. Toss ingredients and adjust lemon and salt as needed. Serve at room temperature or cold, over fresh greens or with a vegetable side. Leftovers will keep in an airtight container in the fridge for up to 4 days.