Add flour, oats, baking soda, and salt into a medium-sized bowl and mix together. Set aside.
Melt the coconut oil in the microwave for 30 - 45 seconds.
Add the melted coconut oil (can be luke-warm, not hot) and sugars together with a mixer until smooth. Add eggs, beating in one at a time until incorporated. Add the vanilla and mix in.
Add the dry ingredients, using mixer on low and mix until just barely combined.
Fold in the chocolate chunks and coconut.
Using a large cookie dough scoop (ice cream scoop size) scoop dough onto baking sheets lined with parchment paper. Cookies will spread some, so leave space 2 inches apart.
Bake for about 10-12 minutes, until lightly golden brown. Let cool on baking sheet 5 minutes and transfer to wire rack.
For smaller cookies, use small scoop or tablespoon and bake 8-10 minutes.
Notes
I baked large and small cookies. I used 1 cup of Hershey Kisses, very roughly chopped and 1 cup of semi-sweet chocolate chips. Yields: 24 large or 48 small