Preheat oven to 450º. Prepare rice according to package directions, less 5 minutes.

Meanwhile, heat a large skillet over medium-high heat. In a medium mixing bowl, drizzle olive oil over chicken and season with salt and pepper. Cook chicken until golden all over, 6 minutes per side. Transfer to a plate and set aside.

Add 1 tablespoon oil to skillet and heat over medium. Add garlic and onions and cook until softened, about 3 minutes. Add wine, chicken stock, heavy cream, salt and pepper; bring to a boil and simmer until slightly reduced, about 5 minutes. Add chicken (and juices from the plate), cooked rice, peas, parsley, and 1 cup Parmesan.

Bake until heated through, about 15 minutes. Garnish with parsley and sprinkle with remaining Parm. Serve immediately.