Pizza Popcorn

2 1/2 qts. popped popcorn
1/3 cup butter
1/4 cup grated Parmesan cheese
1/2 tsp. garlic powder
1/2 tsp. dried oregano
1/2 tsp. dried basil
1/4 tsp. onion powder
1/4 tsp. salt

Place popcorn in an ungreased 13 x 9 x 2 in. baking pan. Melt butter in small saucepan. Add remaining ingredients. Pour over popcorn and mix well. Bake, uncovered, at 350 degrees for 15 minutes.