Trout with Lentils

INGREDIENTS

• 1 teaspoon olive oil
• 1/4 cup chopped leek
• 1/4 cup finely chopped carrot
• 2 garlic cloves, minced
• 1 cup dried lentils
• 1/2 cup water
• 1 (14-ounce) can fat-free, less-sodium chicken broth
• 1/4 cup chopped celery
• 1 tablespoon finely chopped fresh parsley
• 1 tablespoon sherry vinegar
• 3/4 teaspoon salt, divided
• 1/2 teaspoon freshly ground black pepper, divided
• 2 (6-ounce) trout fillets
• Cooking spray