|Scrub all of your veggies well, peel if desired and slice into thin strips, doing your best to keep pieces uniform in shape and size (will help ensure they cook at the same rate).
In a small mixing bowl combine all your spices + whisk together to combine well. In a large mixing bowl toss your veggies with the olive oil and lime juice, then add in the spices and coat evenly.
Cover a baking sheet with parchment paper, evenly distribute the root veggies. Bake for about 40 minutes or until are cooked through and starting to brown, flip veggies halfway.
To assemble: warm your soft corn tortillas and top with your favorite fajita toppings.