Preheat oven to 350 degrees. Grease and flour 2 loaf pans (I used 4 mini loaf pans) and set aside.
Combine flour, baking soda, cinnamon and salt, in a bowl and whisk to combine. Set aside.
In large mixing bowl, beat sugar, oil, and eggs. Mix in vanilla, and sour cream, beat to combine.
Add dry ingredients and mix just until combined. Mix in zucchini and cinnamon chips just until combined.
Divide batter between pans.
Prepare Cinnamon Topping: Combine 2 tablespoons sugar and 2 teaspoons cinnamon and sprinkle over the top of the batter in the pans.
Bake for 50-60 minutes (30 minutes for mini loaves) or until a toothpick comes out clean.
Cool 5 minutes in pans on a wire rack; remove from pan, and cool completely on a wire rack before cutting.