Cook chicken breasts in Instant Pot on high for 12 minutes, natural release for 10 minutes, or use pre-cooked chicken.
Dice red onion, red bell pepper, apple, grapes, parsley, dill, and radishes if using.
Pulse chicken, onion, and relish in food processor until finely chopped.
In a bowl, whisk mayonnaise, Greek yogurt, Dijon mustard, apple cider vinegar, lemon juice, paprika, and honey.
Combine chicken mixture with dressing, fold in fruits and herbs.
Chill for 30 minutes before serving.
