Chickpea Potato Salad With Fresh Herbs and Scallions

Ingredients

• 1/2 cup plain full-fat Greek yogurt
• 3 tablespoons mayonnaise
• 2 tablespoons lemon juice (from 1 lemon)
• 1 1/2 teaspoons Dijon mustard
• 1 teaspoon kosher salt
• 1/2 teaspoon black pepper
• 2 tablespoons minced fresh dill, plus more for serving
• 2 tablespoons minced fresh parsley, plus more for serving
• 3 (15-ounce) cans chickpeas, rinsed
• 1 cup finely diced celery (about 3 stalks)
• 1/2 cup thinly sliced scallions, white and green parts (2 to 3 scallions)