One-pan meals are the answer to what to make on busy weeknights, though this one is delicious enough to serve at a casual dinner party. All the components are layered in the skillet, starting with onion and garlic, followed by potatoes and bell peppers, and ending with fish and seasonings, including paprika, bay leaves, and tomato paste. White wine and olive oil impart moistness and more flavor. Serve from the pan, with a simple green salad alongside.