Preheat the oven to 350°F. Line a baking sheet with parchment paper or a Silpat.
In the bowl of a stand mixer fitted with the paddle attachment, beat together the cake mix, oil and eggs until combined. Stir in the chocolate chips. Cover the bowl with plastic wrap and refrigerate the dough for 45 minutes.
When ready to bake, scoop out about 2 tablespoons of dough and roll it into a ball. Arrange the cookie dough balls on the baking sheet, spacing them at least 2 inches apart. Bake the cookies for 10 to 13 minutes or until they’re slightly crisped around the edges and still soft in the center. (The cookies will puff up slightly while baking but then settle as they cool. All ovens vary in temperature, so check the cookies at 12 minutes then continue baking if needed.)
Remove the cookies from the oven and allow them to cool for 5 minutes on the baking sheet before transferring them to a rack to cool completely. Repeat the baking process with the remaining dough, allowing the baking sheet to cool completely between each batch.