Heat olive oil in a large skillet over medium heat.
Add diced onion and sauté for 3-4 minutes until translucent.
Add minced garlic and cook for 30 seconds until fragrant.
Add ground turkey to the skillet, breaking it apart with a spatula. Cook until browned and no longer pink, about 6-8 minutes.
Add diced zucchini, red bell pepper, and sliced mushrooms to the skillet. Stir to combine and cook for 5-6 minutes until vegetables are tender.
Sprinkle dried oregano, dried basil, smoked paprika, crushed red pepper flakes, salt, and black pepper over the mixture. Stir well to evenly distribute the seasonings.
Cook for an additional 2 minutes to allow flavors to meld.
Remove skillet from heat and sprinkle grated Parmesan cheese over the top.
Garnish with chopped fresh parsley before serving.