Preheat the oven to 400. Line a rimmed baking dish or cookie sheet with parchment paper.
Lay the salmon 1 inch apart on the baking dish and drizzle evenly with the olive oil.
Sprinkle the salt and dill evenly over each piece and layer on two slices of lemon on each piece of fish.
Lay the tomatoes beside the fish and drizzle over the olive oil. Sprinkle with salt, pepper and garlic and toss to coat.
Bake uncovered until the tomatoes burst and release their juices and the fish flakes easily with a fork--about 20 minutes. Serve warm with couscous, green beans or a salad.