In a large bowl combine diced potato, sweet potato, onion, avocado oil, and all spices. Toss to combine and pour onto a rimmed baking sheet.
1 medium yellow potato, 1 small sweet potato, 1 onion, 2 tablespoons avocado oil, 1 teaspoon fine sea salt, 1/2 teaspoon ground black pepper, 1/2 teaspoon garlic powder, 1/4 teaspoon chili powder, 1/4 teaspoon cumin, 1/4 teaspoon paprika, 1/4 teaspoon turmeric, 1/4 teaspoon oregano, pinch cayenne