1. Place 2/3 cup pecans in a single layer in a shallow pan.
2. Bake at 350° for 6 to 7 minutes or until pecans are lightly toasted, stirring occasionally.
3. Beat cake mix and next 3 ingredients at low speed with an electric mixer 30 seconds. Increase speed to medium, and beat 1 minute, stopping to scrape bottom and down sides of bowl as needed. Stir in zucchini and 2/3 cup toasted pecans. Pour batter evenly into 2 (9- x 5-inch) lightly greased loaf pans. Sprinkle remaining 1/3 cup pecans evenly over batter.
4. Bake at 350° for 35 to 40 minutes or until a long wooden pick inserted in center comes out clean. Cool in pans on a wire rack 10 minutes. Remove from pans to wire rack, and let cool 15 minutes before slicing.
Note: For testing purposes only, we used Duncan Hines Moist Deluxe Spice Cake Mix.