Line baking sheets with parchment paper. Draw twenty-four 4x2-1/2-in. rectangles on the paper; set aside.
For meringue, in a large bowl, beat the egg whites, 1 teaspoon vanilla, cream of tartar and salt on medium speed until soft peaks form. Gradually beat in sugar, 1 tablespoon at a time, on high until stiff peaks form.
Insert a #12 round pastry tip in a pastry bag or heavy-duty plastic bag. Fill bag with meringue. Pipe meringue in long rows on rectangles until each is completely filled. Bake at 250° for 1 hour or until set and dry. Turn oven off; leave meringues in oven for 1 hour.
Remove from the oven and cool on baking sheets. When cooled completely, remove meringues from paper and store in an airtight container at room temperature.
In a microwave, melt chocolate chips and shortening; stir until smooth. Spread 1 tablespoon over each meringue. Let stand until chocolate is set.
In a large bowl, beat cream until soft peaks form. Gradually add confectioners' sugar and remaining vanilla, beating on high until stiff peaks form.
Set aside 12 strawberries; cut remaining strawberries into 1/4-in. slices. Place 12 meringues on a flat serving platter. Spread each with 2 tablespoons whipped cream; top with sliced strawberries. Spread each with 2 tablespoons whipped cream. Top with remaining meringues and whipped cream. Loosely cover; refrigerate for up to 2 hours.
Just before serving, drizzle with chocolate syrup. Cut reserved strawberries in half. Arrange cut side down over whipped cream. Refrigerate leftovers.