Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Cut the chicken breast and the peeled sweet potato into uniform half-inch cubes to ensure even cooking.
In a medium mixing bowl, whisk together the melted coconut oil, coconut sugar, sea salt, cinnamon, and smoked paprika.
Add the chicken and sweet potato cubes to the bowl and toss thoroughly until every piece is well-coated in the spice glaze.
Spread the mixture in a single layer on the prepared baking sheet, ensuring the pieces aren't touching so they can crisp up properly.
Roast for 20 to 25 minutes, flipping the bites halfway through, until the chicken is cooked through and the sweet potatoes have caramelized edges.
Place the fresh baby spinach in a serving bowl and top with the hot chicken and potato bites to lightly wilt the greens.