Baked Sweet Potato Chips

large sweet potatoes, peeled and sliced thin (about ⅛ inch thick) 2 teaspoons chili powder 1 teaspoon garlic salt 1/4 teaspoon smoked paprika 1/4 teaspoon cumin powder 1/4 teaspoon kosher salt 1/2 teaspoon cracked black pepper 1/4 cup canola oil