Place the chicken in a blender and blend until finely chopped. Add the egg white and blend until mixed.
Mix the bread cubes and milk in a bowl. Let sit for 2 to 3 minutes or until the bread absorbs the milk. Add the chicken combination, scallions, cilantro, chili powder, cumin, salt, and pepper and mix well. Use you hands to create 4 round patties.
Spray a skillet with the cooking spray. Sauté the patties for approximately 4 minutes or until browned. Turn over and cook the other side for another 4 minutes.
Mix together the water and grits in a microwave proof bowl. Cook for 3 minutes on a high setting.
Separate the patties onto plates, serve with grits, and top with the margarine.