Thinly slice onion, slice tomatoes and Brussels sprouts in half, and add to a 9X10 inch baking dish along with kalamata olives (be sure pits have been removed). Stir in thyme and olive oil. Bake in preheated oven for 10 minutes. Remove.
Add salmon filets to baking dish. Stir mixture and top the salmon with the veggie mixture. Bake for an additional 10 minutes.
Serve salmon and veggies with rice and orange wedges on the side.