In a large bowl, pour the melted oil over the pretzels stirring until the pretzels are coated.
Pour the cinnamon-sugar mixture over the pretzels and stir gently until the pretzels are covered. Spread the coated pretzels on a large baking sheet in a single layer (you may need two baking sheets), and place the pan in the oven.
Bake the pretzels for 1 hour, stirring every 15 minutes. Remove from the oven, spread on waxed paper and allow to cool completely,