In a mixing bowl, combine the softened cream cheese, shredded cheddar cheese, chopped chipped beef, Worcestershire sauce, garlic powder, onion powder, and black pepper. Mix until well combined and smooth.
Shape the mixture into a ball or log shape using your hands.
Wrap the cheese ball in plastic wrap and refrigerate for at least 2 hours, or until firm.
Once chilled, remove the cheese ball from the wrap and roll it in the chopped nuts until fully coated.
Place the cheese ball on a serving platter and garnish with chopped parsley. Serve with crackers or vegetable sticks.