In a large bowl, whisk together all dressing ingredients until smooth. Season with salt and pepper to taste (I typically use about 1/4 teaspoon each).
Add rotisserie chicken to a food processor and pulse until finely chopped. Measure out 2 lightly packed, leveled cups.
Add chicken, celery, red onion, and pepitas to the bowl with the dressing. Gently fold everything together with a spatula until evenly coated. Taste and adjust seasoning if needed.
Enjoy on toasted bread with lettuce and avocado (optional), or serve with crackers for scooping.
Video
Notes
Note 1: I grab a rotisserie chicken and pull off the meat in large chunks. Then I pulse it in a food processor until finely chopped. You can also finely dice it by hand.Note 2: The type of yogurt makes a big difference in flavor and texture. I recommend using full-fat plain Greek yogurt. Greek Gods is my go-to.Note 3: Use whatever herbs you have or like best. Freeze-dried and fresh both work. Use the same amount, and if using fresh, finely dice before measuring and mixing in.Note 4: I love serving this salad as a dip with Wheat Thins, or on toasted bread with lettuce and avocado.Storage: Store leftovers in an airtight container in the fridge for 3 to 4 days. Stir before serving and adjust seasonings if needed. Best served cold.