Preheat oven to 350°. Generously grease and flour 10-inch Bundt pan; set aside.
Whisk together flour, baking powder, salt and baking soda in a medium bowl; set aside.
Beat Country Crock® Spread with granulated sugar in large mixing bowl, with electric mixer, until light and fluffy, about 5 minutes. Add eggs, one at a time, beating well after each addition. Beat in vanilla, scraping sides occasionally. On low speed, alternately beat in flour mixture and sour cream just until blended, beginning and ending with flour mixture.
Combine pecans, brown sugar, chocolate chips and cinnamon in medium bowl; set aside.
Spoon 1/3 of the cake batter into prepared pan; sprinkle with 1/2 of the pecan mixture. Spoon 1/2 of the remaining batter over pecan mixture; spread to cover. Repeat with remaining pecan mixture and cake batter. With butter knife, gently swirl to marble; spread top to smooth.
Bake 55 minutes or until toothpick inserted in center comes out clean. On wire rack, cool 30 minutes; remove from pan and cool completely. Just before serving, sprinkle, if desired, with confectioners sugar.