Begin by mixing the cream cheese, cheddar, and blue cheese in a mixing bowl until smooth.
Add the diced bell peppers, chopped herbs, garlic powder, onion powder, salt, and pepper.
Taste the mixture and adjust seasoning if needed before shaping it.
Shape the cheese mixture into a round ball using your hands.
Wrap the cheeseball in plastic wrap and refrigerate for at least 2 hours, or until firm.
Once firm, spread the crushed nuts on a plate and roll the cheeseball in them until well-coated.
Transfer the cheeseball to a serving platter, and garnish with decorative herbs or edible flowers if desired.
Serve alongside an assortment of crackers, fresh vegetables, or spreads.