Combine flour, baking powder, baking soda, cinnamon and salt in medium bowl; set aside.
Beat soy spread and sugar in large bowl until light and fluffy. Beat in eggs. Beat in bananas, chia seeds, sour cream and vanilla until blended. Add in flour mixture and nuts; stir until just blended.
Spoon into 9 x 5-inch baking pan sprayed with nonstick cooking spray.
Bake at 350°F, 55 to 65 minutes or until wooden pick inserted in center comes out clean. Cool in pan 10 minutes; remove and cool on wire rack.