Preheat your oven to 400°F and line a baking sheet with parchment paper.
Peel the sweet potato and cut it into small, uniform cubes.
Toss the sweet potato cubes with half of the olive oil and a pinch of salt, then roast for 20-25 minutes until tender and slightly browned.
Season the chicken breast with garlic powder, salt, and pepper.
Heat the remaining olive oil in a skillet over medium-high heat and grill the chicken for about 6 minutes per side or until the internal temperature reaches 165°F.
Remove the chicken from the heat and let it rest for 5 minutes before slicing into thin strips.
In a small mixing bowl, combine the Greek yogurt and lemon juice, stirring until smooth and creamy.
Place the baby spinach and shredded carrots in a large serving bowl.
Top the greens with the roasted sweet potatoes and sliced grilled chicken.
Drizzle the lemon-yogurt dressing over the bowl and serve immediately.