Preheat the oven to 400 degrees. Grab a large baking sheet. <Cover with foil for easier clean up>
Peel and dice sweet potatoes into bite sized pieces. Drizzle with 2 Tbsp avocado oil and 2 tsp taco seasoning. Spread evenly on 2/3 of the baking sheet.
Place uncooked chicken in the other 1/3 of the baking sheet. Sprinkle with remaining 1 tsp taco seasoning.
Bake for 20 minutes, or until chicken is cooked to an internal temperature of 165 degrees. Flip the sweet potatoes mid way. If you like your sweet potatoes roasted more, remove chicken when cooked through, and leave the potatoes roasting for another 10 - 20 minutes. <This is what I did!> While this is baking, make the dressing.