I have made a pie along these lines without chocolate chips, so I think the chocolate chips would be optional if you used the pecans. I am posting it how it appears tho, so you can make your own adjustments. I will also post the pie recipe I have like this separately. Hope this helps.

Forgotten Cookies

2 egg whites, at room temperature
2/3 cup sugar
1/4 teaspoon cream of tarter
1 cup chopped pecans, optional
1 package chocolate chips, mini or regular
1 teaspoon vanilla
Preheat oven to 350 degrees F. Beat egg whites until stiff. Gradually add sugar & cream of tartar. Stir in pecans, chips and vanilla. Drop by spoonfuls on foil lined cookie sheets. Turn preheated oven off when you place cookies in oven. Do not open until following morning or 8 hours later.