Preheat oven to 350°F (175°C) and line two baking sheets with parchment paper.
In a medium bowl, whisk together the flour, baking soda, and salt.
In a large bowl, cream together the coconut oil and coconut sugar until well combined.
Add the egg and vanilla extract to the wet mixture, beating until smooth.
Gradually incorporate the dry ingredients into the wet ingredients until just combined.
Stir in the oats, dark chocolate chips, chopped pecans, and crushed pretzels by hand.
Scoop rounded tablespoons of dough onto the prepared baking sheets, spacing them 2 inches apart.
Bake for 10 to 12 minutes or until the edges are lightly golden brown.
Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.