Blend the Ricotta with salt, pepper and oregano. Rub chicken with garlic powder and brown in skillet with 2 tablespoons oil for approximately 12 minutes on each side. Remove and cool.
Place chicken in baking dish side by side. Spoon 1/4 cup seasoned Ricotta and 1/4 cup crushed tomatoes in center of each breast. Top each breast with 2 slices of Mozzarella and bake in preheated 350 degree oven for 20 minutes.
Serves 4.