Combine eggs, sugar, oil, juice and pineapple. Mix well.
Sift together baking powder and flour and mix into pineapple mixtures. Fold in nuts. Pour into greased and wax paper lined 9 x 5 inch loaf pan and bake at 350 degrees until toothpick inserted comes out clean, about 50 minutes. Or fill greased muffin cups 3/4 full and bake at 350 degrees for 25 minutes.