In a medium bowl stir together deviled ham, cream cheese, cheddar cheese, sweet pepper, and salad dressing mix. Divide mixture in half. Cover and chill for 1 to 1-1/2 hours or until firm enough to handle.
Form each portion into a ball. Roll the balls in sunflower seeds to coat. Cover and chill at least 1 hour before serving. Serve with crackers, baguette slices, or tortilla chips. Makes 24 (2-tablespoon) servings.