Preheat your oven to 400°F and line a baking sheet with parchment paper.
Peel and dice the sweet potato into 1/2-inch cubes, then toss with half of the olive oil and a pinch of sea salt.
Spread the sweet potatoes on the baking sheet and roast for 20-25 minutes until they are tender and slightly caramelized.
While the potatoes roast, season the chicken breast evenly with garlic powder, sea salt, and black pepper.
Heat the remaining olive oil in a skillet over medium heat and sear the chicken for 6-7 minutes per side until the internal temperature reaches 165°F.
Remove the chicken from the skillet and let it rest for 5 minutes before slicing into strips.
In a large bowl, combine the chopped kale with lemon juice and massage the leaves with your hands for 1 minute until they soften.
Assemble the bowl by topping the massaged kale with the roasted sweet potatoes, sliced chicken, and fresh avocado slices.