Preheat the oven to 350°F (180°C). Grease 2–3 large baking sheets with cooking spray.
In a medium bowl, mix together the flour, salt, and baking soda.
In a large bowl, combine the vegetable shortening, brown sugar, granulated sugar, and vanilla. Using an electric hand mixer, beat on medium speed until creamy.
Add the eggs and beat until light and fluffy.
Gradually add the flour mixture and beat to incorporate. Mix in the oats.
Fold in the chocolate chips until evenly distributed.
Scoop rounded tablespoons of the dough onto the prepared baking sheets, 12 cookies per pan.
Bake for 10–12 minutes or until golden. Set the baking sheets on top of wire racks and cool for 2 minutes, then transfer the cookies directly to the racks and let cool completely.