Preheat your oven to 400°F and line a baking sheet with parchment paper. Peel and slice the carrots into 1/4-inch thick slices.
In a large bowl, toss the carrots with olive oil, chili powder, paprika, ground cumin, cayenne pepper, salt, and pepper until evenly coated.
Arrange the carrots in a single layer on the baking sheet and roast for 18 to 23 minutes, tossing once halfway through, until they are tender and lightly caramelized.