Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
Peel the sweet potato and cut it into 1/2-inch cubes, then toss them directly on the tray with olive oil, sea salt, and black pepper.
Cut the chicken breast into bite-sized nugget pieces and season them evenly with the garlic powder.
Arrange the sweet potatoes on one side of the tray and the chicken pieces on the other side, ensuring they are in a single layer.
Bake for 15 minutes, then while the tray is in the oven, whisk together the honey, coconut aminos, and minced garlic in a small bowl.
Remove the tray from the oven, brush the chicken pieces generously with the honey-garlic glaze, and return to the oven for 5-7 more minutes until the chicken is cooked through and the sauce is tacky.
Garnish the chicken with sesame seeds and serve immediately while the sweet potatoes are hot and tender.