Greek Mezze Salad

Name: Greek Mezze Salad
Ingredients: 2 cans (each 13.5 ounces) chickpeas, rinsed and patted dry; ½ cup extra-virgin olive oil, plus more for serving; 1 tablespoon za'atar, plus more for serving; Kosher salt and freshly ground pepper; 2 pitas (each 6 inches), cut into 1-inch wedges (about 2 cups); 1 cup full-fat Greek yogurt; 1 teaspoon grated lemon zest, plus 2 tablespoons fresh juice; 1 bunch radishes, cut into ¼-inch wedges (2 cups); 4 mini cucumbers, halved and cut into ¼-inch slices (3 cups); 2 cans (each 7 ounces) stuffed grape leaves, drained and halved; Fresh mint leaves, for serving