Mom's Chicken with Tomato & Pepperoni

2 Tbsp oil
1 8-ounce tomato sauce
1 tsp sugar
1 tsp chicken bouillon granules
1/8 tsp oregano
1 tsp lemon juice
4 slices mozzarella cheese
2 Tbsp parmesan cheese
2-inch slice of pepperoni, grated
4 boneless, skinless chicken breasts

Pound chicken between plastic wrap to 1/3-inch thickness. Mix tomato sauce, lemon juice, sugar, oregano and bouillon. Set aside. 10 minutes before serving, heat oil over high heat. When hot, add chicken; fry 2 to 3 minutes on each side. Do not overcook. Remove to a serving platter. Cover with cheese slices. Add sauce to hot pan. Simmer 2 minutes. Add pepperoni, and stir together. Serve over chicken. Sprinkle with parmesan and serve.