01 -
Preheat the oven to 325°F. Lightly grease an 11-by-15-inch baking pan. Use fully thawed boneless, skinless chicken breasts and arrange them in one layer. Distribute the 1 teaspoon kosher salt and 1 teaspoon black pepper over the chicken.
02 -
In a large saucepan, melt 1/2 cup unsalted butter over medium-low heat. Stir in both packets of dry Italian dressing mix, both cans of condensed mushroom soup, and 1 cup broth or dry white wine. Do not add the soup can’s additional serving liquid.
03 -
Add the 8 ounces chive cream cheese in pieces. Stir gently, scraping the bottom, until the sauce is evenly blended and no large cheese lumps remain. Avoid a prolonged hard boil.
04 -
Pour the warm sauce evenly over the chicken. Bake uncovered, beginning temperature checks around 45 minutes. Continue as needed until the thickest center of each breast reaches at least 165°F; baking time depends on their thickness and starting temperature.
05 -
Near the end of baking, bring a separate large pot of water to a boil. When the chicken is done or almost ready, cook the 1 pound angel hair according to its package, checking promptly because thin pasta softens quickly.
06 -
Reserve a small amount of hot pasta water, then drain the noodles. Transfer the fully cooked chicken to a clean plate and stir the sauce. Loosen it with a little reserved hot water only if necessary, adding gradually.
07 -
Divide the hot pasta between plates, spoon over sauce, and add whole or sliced fully cooked chicken. Finish with optional chives and Parmesan. Refrigerate shallow leftover portions promptly; keep pasta separate from chicken and sauce when practical.