Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper for easy cleanup.
Peel the sweet potato and cut it into 1/2-inch cubes, then slice the chicken breast into similar bite-sized pieces.
In a small mixing bowl, whisk together the honey, extra virgin olive oil, apple cider vinegar, ground cinnamon, sea salt, and black pepper until well combined.
Place the chicken and sweet potato cubes in a large bowl, pour the honey glaze over them, and toss thoroughly to ensure every piece is well coated.
Spread the mixture onto the prepared baking sheet in a single even layer, ensuring pieces are not overcrowded to allow for proper browning.
Roast in the oven for 20 to 25 minutes, tossing the ingredients halfway through, until the chicken is cooked through and the sweet potatoes are tender with golden edges.
Remove from the oven and serve the warm roasted chicken and potatoes over a fresh bed of baby spinach, allowing the heat to slightly wilt the greens.