In a medium bowl, add the Greek Yogurt, onion powder, garlic powder, cayenne pepper, dried parsley, pepper, salt, and the Dijon mustard, and mix until well combined to create the potato salad dressing.
In a large bowl, add the diced Yukon potatoes, diced hard-boiled eggs, dill relish, and the potato salad dressing and mix until well combined.
Place in refrigerator for 15-30 minutes to chill and serve when ready