Set oven to 375 degrees.
Rinse chickpeas with cold water in a colander. Spread chickpeas onto a paper towel and pat dry. Set dried chickpeas aside in a medium bowl.
Mix oil, sugar & cinnamon together in a small bowl. Pour mixture on top of chickpeas and mix with a spoon until mixture is evenly distributed.
Spread dressed chickpeas evenly onto a baking sheet. Bake for 40 minutes. Let chickpeas cool for a few minutes and then enjoy your crunchy treat!