Prepare all the ingredients needed for the dish, wash the tomatoes under running water and dry them.
Lightly salt and pepper the red fish. If you have one large piece, divide it to help the meat cook faster. Cut tomatoes and lemons into slices.
Place lemons and tomatoes on foil. Place the fish on top. Place a few more slices of tomato and lemon on the fish and wrap it in foil.
Place in the oven to cook for 25 minutes. Then move the top of the foil so that the fish browns a little. The chum salmon is ready in the oven, you can sprinkle it with dill.
Serve chum salmon as an independent dish, additionally decorate the dish or the fish itself with herbs, you can serve the fish on lettuce leaves.