Preheat oven to 350 degrees F. Line 2 (12 capacity) standard cupcake pans with paper liners. Toss the pecans, banana pieces and pineapple with 1/2 cup flour in a small bowl. Set aside. Whisk the remaining 2 1/4 cups flour, baking soda, cinnamon, nutmeg, ginger, and salt together in a medium bowl.