Sheet Pan Baked Salmon and Potatoes

Name: Sheet Pan Baked Salmon and Potatoes
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: Cajun And Creole
Ingredients: 1 lb baby potatoes; 2 tablespoons olive oil (divided); 1/4 teaspoon salt; 1 1/2 teaspoons garlic powder (divided); 1 teaspoon Italian seasoning; 4 salmon fillets; 1 tablespoon olive oil; Salt and pepper (for seasoning); 2 to 3 teaspoons Cajun seasoning (or salmon seasoning); 2 tablespoons butter (for serving); 1 lemon (for serving)