Preheat oven to 350 degrees F
In a medium bowl, mix together flour, baking soda and salt
In a separate bowl, combine olive oil, brown sugar, egg and vanilla. Slowly add the flour mixture to the sugar mixture and mix until fully combined (i use a stand mixer, but a handheld mixer works just as good!)
Once the dough is formed, add in the chocolate chips (and cinnamon if using) and mix again
Roll dough into about 12 tablespoon sized balls and place on a parchment paper lined cookie sheet (do not press down yet)
Bake for 9-12 minutes or until tops begin to turn golden brown
Once done, remove from oven, and gently press down on the tops of the cookies to flattent them a little