Whisk the Dressing: In a large mixing bowl, combine the extra virgin olive oil, pomegranate molasses, lemon juice, grated garlic, sumac, salt, and pepper. Whisk vigorously until the ingredients emulsify into a smooth, thick dressing.
Prep and Add Base: Ensure your rinsed chickpeas are completely dry. Dump them directly into the bowl with the dressing. Add your finely diced tomatoes, cucumbers, red onions, and chopped walnuts. Pile the finely chopped parsley and mint on top.
Toss and Marinate: Gently fold the mixture together with a large spoon until every single chickpea and vegetable fragment is glistening and fully coated. Let the bowl rest on the counter for 15 minutes before serving to let the flavors meld.
Toast and Assemble: Brush your bread slices with a touch of olive oil and toast them in a skillet or broiler until crunchy and golden brown. Spoon generous heaps of the dressed salad onto the warm bread and serve immediately.