New Jersey Fattoush

Name: New Jersey Fattoush
Ingredients: 1⁄2 medium onion, thinly sliced; 1⁄2 cup rice wine vinegar; 1⁄4 cup lime juice; 2 tbsp. canola oil; 2 tbsp. dried mint; 2 Persian or Kirby cucumbers, halved lengthwise and sliced into ¼” pieces; 1 head iceberg lettuce, chopped or torn into bite-size pieces; 1 tomato, quartered and sliced into ¼” pieces; 2 cups pita chips (such as Stacy’s), gently crushed; Kosher salt and freshly ground black pepper, to taste