Drain zucchini in a colander. Press and squeeze very well to remove as much of the excess liquid as possible. In a medium bowl, combine drained zucchini, eggs, pineapple, sugar, oil and vanilla. Add zucchini mixture all at once to flour mixture. Stir just until moistened (batter should be lumpy). Fold in 3/4 cup of the nuts. Spoon batter into prepared pans. Sprinkle with remaining nuts.