Preheat your oven to 350°F (175°C).
In a large skillet or pot, brown the ground turkey over medium heat until fully cooked, about 5-7 minutes.
Add chopped onion, bell pepper, and garlic to the skillet; sauté until softened, about 3-5 minutes.
Stir in the rice, diced tomatoes (with juices), chicken broth, Italian herbs, salt, and pepper.
Bring the mixture to a boil, then reduce heat to low and cover, simmering for 18-20 minutes.
Remove from heat and let it sit covered for another 5-10 minutes to allow the rice to finish cooking.
If desired, sprinkle cheese on top and cover until melted, about 3-5 minutes.
Fluff with a fork and serve warm.