Preheat your oven to 400°F (200°C) and line a large rimmed sheet pan with parchment paper for easy cleanup.
In a medium mixing bowl, combine the ground turkey with the dried sage, garlic powder, smoked paprika, sea salt, and black pepper until the spices are evenly distributed.
Crumble the seasoned turkey mixture into small, bite-sized pieces and scatter them across the prepared sheet pan.
Add the cubed sweet potatoes, diced red bell pepper, zucchini, and red onion to the pan with the turkey.
Drizzle the extra virgin olive oil over the turkey and vegetables, then toss gently with your hands or a spatula to coat everything evenly.
Spread the mixture out into a single layer, ensuring there is enough space for the vegetables to roast rather than steam.
Bake for 20 to 25 minutes, tossing the ingredients halfway through, until the turkey is fully cooked and the sweet potatoes are fork-tender and golden.
Remove from the oven and garnish with freshly chopped parsley before serving or dividing into meal prep containers.