With a mixer, or by hand, stir together oil, brown sugar, vanilla, and salt. Add the flours and baking powder and mix on low speed. While mixing, slowly pour in the water until the dough is smooth. Stir in the chocolate chips.
Use a small ice cream/cookie scoop or drop dough by tablespoon onto a baking sheet, spacing the cookies about 2 inches apart (about 6 cookies per baking sheet).
Bake for 12 to 15 minutes. Cookies will be golden around the edges and soft in the center. For soft cookies, remove from oven before they are too golden, around 12 minutes. Let cool on baking sheet for less than 1 minute. Remove with a flat spatula and place on a flat surface to cool completely.