Preheat the oven to 350 F. In a medium bowl, whisk together flour, salt, and baking soda. In a large bowl, mix together butter, granulated sugar, and brown sugar until fluffy. Add in the egg and vanilla extract until smooth.
Add in the flour mixture and mix until it is fully combined. Divide the cookie dough between three bowls, mix red food coloring into one and blue into another. Mix 1/3 cup chocolate chips in each cookie dough. In a shallow dish, combine granulated sugar and ground cinnamon.
Take a small amount of cookie dough from each bowl, and roll together into balls. Roll in the cinnamon sugar mixture and place onto a large ungreased baking sheet at least 2-inches apart. Bake for 10-12 minutes.
