Salmon with Fettuccine Alfredo

Ingredients (9)

• 4 salmon fillets (4 ounces each)
• 1/4 teaspoon coarsely ground pepper, divided
• 4 ounces uncooked fettuccine
• 2 garlic cloves, minced
• 1 tablespoon reduced-fat margarine
• 1 tablespoon all-purpose flour
• 1/8 teaspoon salt
• 1 cup fat-free milk
• 4 tablespoons grated Parmesan cheese, divided