Place popped corn, parsley and 1/2 teaspoon paprika in 1 gallon resealable bag; seal. Crush popcorn mixture with rolling pin to a medium-fine consistency; place in shallow dish.
Combine cream cheese, blue cheese, milk, remaining 1 teaspoon paprika, and garlic powder in medium bowl until blended. Shape into a ball.
Roll cheese ball into popcorn mixture until completely coated. Serve immediately; store in airtight container in the refrigerator.