Can I make this ahead of time?
Yes. Store the chicken salad in an airtight container in the refrigerator for up to 3 days. Assemble the sandwich just before serving to prevent the bread from getting soggy.
What can I substitute for Greek yogurt?
You can use regular Greek yogurt (full-fat or low-fat), or replace it with 3 tablespoons of mayo for a richer version, though this reduces the protein content.
Can I use fresh pesto instead of jarred?
Yes, homemade or fresh pesto works well. Use the same amount (2 tablespoons) or adjust to taste, as fresh pesto can vary in intensity.
Is this recipe gluten-free?
The chicken salad itself is naturally gluten-free, but the sourdough bread contains gluten. Swap it for gluten-free bread to make the full sandwich gluten-free.
How do I prevent the salad from being watery?
Make sure the rotisserie chicken is fully cooled before shredding, and drain any excess moisture. Chop the celery finely and don't over-mix the salad.