Cook the pasta according to package directions. Drain and set aside.
While the pasta cooks, heat avocado oil in a large skillet over medium heat. Add diced bell pepper and sauté for 3–4 minutes until slightly tender.
Add the ground turkey to the skillet. Cook until browned, breaking it up as it cooks for about 6–8 minutes. Season with garlic powder, salt, and pepper.
Stir in the spaghetti sauce and let everything simmer for 3–5 minutes so the flavors meld.
Add the cooked pasta to the skillet and toss to coat evenly in the sauce.
Top with cheese if desired and serve warm.
