Here's a recipe I've been making for over 30 years - both for ourselves & for company. It never fails to please & is easy to boot. While the recipe does call for the bone-in skin-on breasts to be split, I'm sure whole breasts would work just as well, although with 4 "whole" breasts rather than halves, you might want to double up on the sauce.
Chicken Parisienne
One pkg. (usually containing 2-3 pieces) bone-in, skin-on, split chicken breasts
One can Cream of Mushroom soup (the regular condensed version, NOT the "healthy no-fat" one)
1/2 to 3/4 soup-can of dry sherry
One can mushroom pieces, drained, OR one 8 oz. pkge. fresh button mushrooms, cleaned & sliced
One 8 oz. container sour cream
freshly ground black pepper
paprika
Preheat oven to 350.
In a pan large enough to hold all sauce ingredients, saute fresh mushrooms (if using) until brown & tender. Remove from heat. Stir in can of soup, & use soup can to measure in 1/2-3/4 can of dry sherry. Stir to combine. (If using canned mushrooms, just drain & combine with other ingredients in saucepan.)
Place chicken pieces skin-side down in greased baking dish & pour sauce mixture over (reserving saucepan to reheat sauce later). Place in center of oven & bake for 20 minutes. After 20 minutes, turn chicken pieces skin side up & continue to bake until done (depending on the size of the pieces, another 20-30 minutes).
When done, turn off oven, remove chicken pieces to a plate, & scrape sauce & juices back into the reserved saucepan. Place chicken back into baking dish & back into turned off oven with door ajar to keep warm.
Meanwhile, over medium/low heat, add sour cream to sauce in saucepan & heat just until warmed through. (Overheating or boiling will cause sour cream to curdle. Won't affect the taste, just won't look as nice.)
Serve chicken with white rice - both with sauce poured over & sprinkled with a little paprika & freshly ground pepper to taste - along with plain boiled buttered baby carrots & a green salad.