Blackened Salmon Pasta
1 (16 ounce) package linguine pasta 1 (8 ounce) package baby bella mushrooms, sli… 1 cup cherry or grape tomatoes, halved 1 medium green bell pepper, sliced 1 medium red bell pepper, sliced 1 tablespoon chopped fresh parsley, or to tas… 1 tablespoon olive oil, or as needed 1 teaspoon brown sugar 1 teaspoon Cajun seasoning 1 teaspoon cayenne pepper 1 teaspoon sea salt 1 ½ tablespoons ground paprika 2 cloves garlic, minced 2 cups half-and-half 2 tablespoons unsalted butter, melted 6 (4 ounce) skin-on salmon fillets 8 tablespoons unsalted butter, divided ¼ teaspoon dried basil ¼ teaspoon dried thyme ¼ teaspoon garlic powder ¼ teaspoon ground black pepper ¼ teaspoon ground white pepper ½ cup finely chopped onion ½ teaspoon dried oregano ½ teaspoon ground black pepper ½ teaspoon salt ¾ cup grated Parmesan cheese ¾ teaspoon garlic powder ¾ teaspoon onion powder