Preheat the oven to 325°F. Line a baking sheet with parchment paper or lightly spray it with oil.
Put the 2 1/2 cups rolled oats into a large mixing bowl.
In a small saucepan over low heat, combine 2 tablespoons coconut oil, 1/4 cup Nutella, and 2 tablespoons honey. Stir continuously until the mixture is smooth and combined. Stir in the pinch of salt.
Pour the melted Nutella mixture over the oats and stir until the oats are evenly coated.
Spread the coated oats in an even layer on the prepared baking sheet.
Bake for 15 minutes. Remove the pan, stir in the 1/2 cup roughly chopped hazelnuts, then return the pan to the oven and bake for another 15 minutes.
Remove the granola from the oven and cool completely on the baking sheet.
Once cool, stir in the 1/2 cup milk chocolate chips. Store the granola in an airtight container.