Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Dice the chicken breast and sweet potato into uniform 1-inch cubes to ensure even roasting.
In a large bowl, toss the chicken and sweet potato cubes with the olive oil, sea salt, black pepper, and garlic powder until thoroughly coated.
Spread the mixture in a single layer on the prepared baking sheet and roast for 20 to 25 minutes until the chicken is cooked through and the potatoes are tender.
While the chicken and potatoes roast, place the chopped kale in a bowl with half of the lemon juice and massage with your hands for 1 minute until the leaves soften and turn dark green.
In a small bowl, whisk together the tahini, remaining lemon juice, and maple syrup until the dressing reaches a smooth, pourable consistency.
Slice the half apple into thin wedges and set aside.
Assemble the bowl by placing the massaged kale at the base, topping it with the roasted chicken and sweet potatoes, and finishing with the apple slices and a drizzle of tahini dressing.