In a food processor, combine scallions, basil, dill, avocados, Greek yogurt, lemon juice, and garlic. Add olive oil, salt, and pepper, then blend until smooth.

In a mixing bowl, combine shredded chicken, diced cucumbers, red onions, dill, and basil.

Pour the dressing over the salad ingredients and gently toss to combine.

Serve immediately as is or in lettuce boats, sandwiches, or over apple slices.