1In small bowl, mix flour, cocoa, baking powder, baking soda and salt; set aside. In large bowl, beat butter and 1 cup of the sugar with electric mixer on high speed until light and fluffy. Add whole egg and almond extract, beating until blended. On low speed, beat in flour mixture until blended. Cover; refrigerate at least 30 minutes.
2Heat oven to 350°F. Line large cookie sheet with cooking parchment paper. In large bowl, beat egg whites with electric mixer on high speed until foamy. Add remaining 1 cup sugar, 1 tablespoon at a time, beating until stiff peaks form and sugar is dissolved. Fold in almonds.
3Roll dough by 2 heaping teaspoonfuls into balls. On cookie sheet, place balls 2 inches apart. Press balls with palm of hand to flatten slightly. In center of each flattened cookie, place 2 chocolate chunks. Spoon 2 heaping tablespoonfuls meringue over each cookie, covering chocolate chunks completely.
4Bake 15 to 18 minutes or until meringue is set. Cool 1 minute; remove from cookie sheet to cooling rack. Store in airtight container for up to 1 week.