Preheat oven to 350 degrees F. Adjust oven rack to the middle position. Either butter a baking sheet or line with parchment paper or a silpad.
Sift together the whole wheat flour, self-rising flour, baking soda, and cream of tartar; set aside.
With an electric mixer at medium-high speed, beat the butter and sugar together until fluffy, approximately 2 minutes. Reduce the speed to medium and beat in the eggs until combined. Add the prepared flour mixture and beat until incorporated. Stir in the Chia Seeds.
Drop tablespoon-sized portions of dough onto the prepared baking sheet, spacing them about 2 inches apart (this is important as the cookies will spread).
Bake approximately 8 to 10 minutes. Remove from oven and let the cookies cool on the baking sheet for 2 minutes, then transfer to a wire rack to cool completely, about 15 minutes.
The cookies may be stored in an airtight container.
Makes approximately 3 dozen cookies.
Chia Seed Cookie Recipe: https://whatscookingamerica.net/cookie/chaiseedcookies.htm