Prepare the Chicken: Open the can of chicken and drain the liquid thoroughly. Place the chicken in a medium mixing bowl and use a fork to break it into smaller pieces for a smoother texture.
Mix the Base: Add the mayonnaise (or Greek yogurt) and Dijon mustard to the bowl with the chicken. Stir until the chicken is evenly coated.
Add Crunch and Flavor: Incorporate the chopped celery, red onion, and sweet pickle relish. These ingredients add a satisfying crunch and a balance of sweet and savory notes.
Season and Enhance: Squeeze in the lemon juice, sprinkle in the garlic powder, and add salt and pepper to taste. If using fresh parsley, mix it in for a burst of freshness.
Customize (Optional): For a twist, toss in your favorite add-ins like chopped apples for sweetness, grapes for juiciness, or almonds for crunch. Mix gently to combine.
Serve or Store: Serve immediately on a bed of lettuce, as a sandwich filling, or with crackers for a quick snack. If not eating right away, store the salad in an airtight container in the refrigerator for up to 3 days.