Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Peel and cube the sweet potato and beets into half-inch pieces to ensure even cooking.
Place the vegetables on the baking sheet, drizzle with olive oil, and sprinkle with sea salt and black pepper.
Season the chicken breast with a pinch of salt and pepper and place it on the same sheet.
Roast for 20 to 25 minutes until the chicken reaches an internal temperature of 165°F and the vegetables are fork-tender.
While roasting, whisk together the balsamic vinegar and Dijon mustard in a small bowl to create the dressing.
Slice the roasted chicken into thin strips once it has rested for a few minutes.
Place the mixed baby greens in a large bowl, then top with the roasted vegetables and chicken.
Finish the salad by sprinkling with crumbled goat cheese and pumpkin seeds, then drizzle with the balsamic dressing.