Toast the pita: Cut pita into pieces, drizzle lightly with olive oil, and bake at 375°F until crisp. Let cool (Skip if using store-bought pita chips.).
Build the salad: In a large bowl, combine romaine, tomatoes, cucumbers, radishes, scallions, parsley, and mint.
Make the dressing: Whisk olive oil, lemon juice, sumac, pomegranate molasses (if using), and salt.
Toss and finish: Pour dressing over the salad and toss well.