Pan Seared Salmon w/ French Green Lentils

INGREDIENTS

• 2 carrots, peeled and chopped
• 1 tablespoon tomato paste
• 1 cup French green lentils
• 1 cup chicken stock
• 1 onion, chopped
• 1 teaspoon dried thyme
• salt and pepper to taste
• 2 cloves garlic, minced
• 2 tablespoons olive oil, plus more for rubbing salmon
• 2 8 oz. salmon fillets
• 2 celery ribs, chopped
• 1 tablespoon red wine vinegar
• 1 leek, white and light green parts only, chopped