Line one baking sheet with parchment paper, lay salmon filets on one side of pan and cover with ⅓ of herb mixture. Flip salmon filets and cover with remaining ⅔ of mixture.
Spread all cut vegetables (tomatoes, bell pepper, zucchini, and mushrooms) out on the remainder of the pan, then drizzle with olive oil, salt, and pepper to taste.
Bake for 30 minutes or until tomatoes are bursting and salmon flakes easily.
