Preheat oven to 400. Line a baking sheet and spray with olive oil spray.
In a small bowl, combine paprika, oregano, garlic powder, cumin, salt and pepper.
Chop the onions, peppers, eggplant, and zucchini/squash into a uniform size. Place all the vegetables in a large bowl and toss with olive oil and spice mix.
Rub the salmon filets with olive oil and sprinkle with salt and pepper.
Add the vegetables and spread into a flat layer, leaving empty space in the middle on the baking sheet. Add the salmon filets in the middle.
Place the baking sheet bake in the oven and bake for 12-15 minutes until your desired doneness for the salmon, depending on the thickness of the fish.
Remove from the oven and serve immediately.