Chicken Parmigiana

Preheat broiler with rack set 4 inches away from the heat source. Combine the breadcrumbs and the Parmesan cheese in a shallow dish. Place the egg in a second shallow dish. Season chicken on both sides with salt and pepper. Dip chicken in egg, turning to coat. Transfer to breadcrumb mixture, turning to coat; set aside.

Pour spaghetti sauce into a 10-by-15-inch baking dish, or a rimmed baking sheet. In a large nonstick skillet, heat half of the oil over medium heat. Add half of the chicken, and cook until golden, 1 to 2 minutes per side. Transfer to a paper-towel-lined baking sheet to drain, then place in prepared baking dish. Repeat with remaining oil and chicken.

Top each piece of chicken with a slice of mozzarella. Broil until sauce is hot, and mozzarella is melted and lightly browned in spots, 5 to 8 minutes.