In a large bowl, combine the turkey, cooked quinoa, bell pepper, half the cilantro, chili powder, cumin, ground coriander (I didn't have any so I left it out), garlic powder, and a good pinch of salt and pepper. Thoroughly mix with your hands, and then form into four little patties. You can chill these in the fridge if you want, for as long as you want, or go ahead and cook ‘em!