Preheat oven to 375. Combine the first four ingredients in a medium bowl, stirring with a whisk. Spray baking sheet with cooking spray.
Combine flour, baking powder, salt, in a large bowl, stirring with a whisk. Cut in chilled butter with a pastry blender, or you could use 2 knives, until the mixture resembles coarse meal. Gently fold in chocolate chips. Add milk mixture, stirring just until moist.
Place dough onto a floured surface and knead lightly four times with floured hands. Form dough into an 9-inch circle onto baking sheet, about 3/4 thick. Using a knife, cut dough into 12 wedges all the way through.