Pumpkin seeds are another great source of protein, iron, and magnesium.  They are also a good source of both omega 3 and omega 6 fatty acids.  You can eat them on their own as a snack, or throw them into a trail mix, salad, or oatmeal.  In the fall, you can roast your own and season them anyway you like!  They are another healthy snack to have on hand during pregnancy to help ease morning sickness or to make sure that you are getting enough nutrient dense calories in our diet.