Preheat the oven to 425°F and line a baking sheet with parchment paper.
Place the chicken breast in a shallow dish. Pour the buttermilk over the chicken, ensuring it’s fully coated. Let it marinate in the refrigerator for at least 30 minutes to an hour.
In a small bowl, combine the whole wheat flour, salt, black pepper, and paprika.
Remove the chicken from the buttermilk marinade, allowing excess to drip off, then dredge in the flour mixture until evenly coated.
Arrange the coated chicken on one side of the baking sheet.
In a separate bowl, toss the chopped carrots with olive oil, a pinch of salt, and a sprinkle of pepper.
Spread the carrots on the other side of the baking sheet.
Bake for 20-25 minutes or until the chicken is cooked through (internal temperature of 165°F) and the carrots are tender and slightly caramelized.
Optionally, broil for an additional 2-3 minutes for extra crispiness on the chicken, watching closely to prevent burning.
Remove from oven and let rest briefly before serving.