Prep the dressing: In a medium bowl, whisk together mayonnaise, Greek yogurt, Dijon, lemon juice, garlic powder, onion powder, and a pinch of salt and pepper.
Add the aromatics: Stir in celery, red onion, and parsley until evenly coated.
Fold in the chicken: Add drained, flaked canned chicken. Use a fork or spatula to gently combine without mashing.
Taste and adjust: Add more salt, pepper, or lemon juice as needed.
If you like it creamier, mix in an extra spoonful of mayo.
Customize: Fold in optional mix-ins like pickles, grapes, or nuts for extra flavor and crunch.
Chill: Cover and refrigerate for at least 20–30 minutes to let flavors meld.
Serve: Spoon onto toast or croissants, wrap in a tortilla with lettuce, or pile over mixed greens. Crackers make a great snack option too.