Unroll pie crust and fit into 9 in. springform pan, pressing into place on sides of pan. Bake 10 minutes or until lightly browned. Let cool 5 minutes on cooling grid.
In large bowl, beat cream cheese, goat cheese, sour cream, flour, salt and pepper with electric mixer on medium speed until smooth and creamy. Add eggs one at a time, beating on low speed until smooth, about 2 minutes. Scrape down bottom and sides of bowl often. Stir in chopped spinach and chives and pour into prepared crust, smoothing top.
Bake 30 to 35 minutes or until center is set. Turn oven off and leave in oven 20 minutes. Remove from oven and let cool on cooling grid for at least 20 minutes before unmolding.