Preheat the oven to 400°F (200°C).
Pierce each sweet potato several times with a fork and place directly on the oven rack.
Roast for 45–55 minutes, or until the potatoes are fork-tender.
Meanwhile, heat olive oil in a large skillet over medium heat.
Add the diced onion and cook for 3–4 minutes until softened.
Stir in the mixed vegetables and cook for another 5 minutes.
Add the cooked chicken, chicken broth, garlic powder, thyme, salt, and pepper.
Simmer for 5–7 minutes until everything is heated through and the broth slightly reduces.
Remove the skillet from the heat and gently stir in the blended cottage cheese until smooth and creamy.
Slice each roasted sweet potato down the center and fluff the inside with a fork.
Fill each potato generously with the creamy Chicken Pot Pie Stuffed Sweet Potatoes filling.
Garnish with fresh thyme or parsley if desired and serve immediately.