Preheat the oven to 375 degrees F (190 degrees C).

In a large skillet over medium high heat, cook the ground turkey or beef until browned, breaking it up with a spoon. Drain excess fat if necessary.

Add the diced onion and minced garlic to the pan. Saute for 3 to 4 minutes, stirring, until the onion is translucent.

Stir in the diced green and red bell peppers. Cook for an additional 5 minutes until they begin to soften.

Add the cooked brown rice or quinoa, drained diced tomatoes, black beans, corn, chili powder, cumin, paprika, salt, and black pepper. Mix thoroughly and cook for another 2 to 3 minutes to combine flavors.

Transfer the mixture into a baking dish or an oven safe skillet, spreading it evenly.

Sprinkle the shredded cheese evenly over the filling.

Bake for 20 to 25 minutes, or until the cheese is fully melted and bubbly.

Remove from the oven and garnish with fresh parsley or cilantro before serving.