Preheat your oven to 425°F (220°C). Peel and dice the sweet potatoes into bite-sized cubes for even cooking. Toss them with olive oil, salt, pepper, and garlic powder, then spread them on a baking sheet and roast until tender and slightly caramelized.
In a medium bowl, whisk together maple syrup, Dijon mustard, olive oil, salt, and pepper. Mix until smooth and fully combined. This sweet and tangy glaze will coat the chicken beautifully.
Add the cubed chicken to the sauce and coat well. Let it marinate for at least 15 minutes to absorb the flavor. Heat a skillet over medium heat and cook the chicken until golden brown and fully cooked through.
While the chicken cooks, prepare your quinoa or brown rice according to package instructions. Fluff the grains with a fork once done. A warm, fluffy base makes the bowl extra comforting.
Divide the cooked quinoa or rice among serving bowls. Add roasted sweet potatoes and top with maple Dijon chicken. Finish with fresh herbs for color and freshness.