Combine the chia seeds, lemon juice and milk. Let stand for 10 minutes.
Cream together the margarine and sugar until smooth. Slowly add the chia seed mixture and blend well. Add the dry ingredients and blend until just combined. Scoop into a greased 8-inch loaf pan and bake at 350°F for 45-50 minutes. When taken out of the oven, combine the sugar and lemon juice for the glaze and pour evenly over the top. Slice and serve when cooled slightly. Makes 12 servings.