This one from Southern Living is one I have used a number of times:
3c all purpose flour
1 tsp baking soda
1/4 tsp salt
1/2 tsp baking powder
3/4c finely chopped pecans
3 eggs
2 c sugar
1c veg. oil
2 tsp vanilla
2c shredded zucchini
1 8oz can crushed pineapple, well drained
Combine dry ingredients and pecans. Beat eggs lightly; add sugar, oil and vanilla. Beat until creamy. Stir in zucchini and pineapple. Add dry ingredients stirring only until they are moistened.
Spoon into 2 well greased and floured 8x4" loaf pans. Bake in preheated oven at 350° for 1 hour or til test done. Cool 10 minutes in pan then turn out onto rack to cool completely.