In a medium bowl, whisk together the 1½ cups all-purpose flour, 1¼ cups old fashioned oatmeal, ¼ cup super-fine almond flour, 2 tablespoons malted milk powder, 2 tablespoons corn starch, ½ teaspoon ground cinnamon, and ½ teaspoon baking soda.
In the bowl of a stand mixer fitted with a paddle attachment, cream together 1 cup light brown sugar, 1 cup salted butter, ½ cup granulated sugar, and 1 teaspoon salt until smooth.
Add in 1 large egg, 2 additional egg yolks, and 1 tablespoon vanilla extract and beat until light and creamy. About 5 minutes.
Add the dry ingredients to the wet ingredients a little at a time, mixing between each addition.
Fold in 1½ cups shredded coconut, 2 cups semisweet chocolate chips, and 1½ cups pecans pieces.
Measure the dough with a #16 cookie scoop, or about 2.5 ounces each. If you'd like, press additional chocolate chips on top of the dough.
Chill uncovered in the fridge for at least 2 hours, preferably 24.
Preheat the oven to 350°F and line two large baking sheets with parchment paper. Add 6 cookie dough balls at least 3 inches apart. Bake for 11 to 14 minutes until the edges are golden brown. Begin baking the next batch on the second pan; do not bake two pans at a time.
Press additional chocolate chips into the cookies immediately after removing them from the oven. Then, use a large round cookie cutter to swirl the baked cookies inside to make them nice and round. When the chips melt and soften, sprinkle with flaky sea salt.
Let the cookies cool on the pan for several minutes before transferring to a wire rack. Chill the pan in the freezer for a couple of minutes between batches so you don't put the dough down on a hot pan.