Smoky Lentil Chorizo Soup (Hearty One-Pot Dinner)

Ingredients

• 1 tablespoon olive oil
• 10 oz (285 g) Spanish chorizo, sliced into coins or half-moons
• 1 large yellow onion, diced
• 2 medium carrots, diced
• 2 celery ribs, diced
• 1 red bell pepper, diced
• 4 garlic cloves, minced
• 2 tablespoons tomato paste
• 1 teaspoon smoked paprika
• 1 teaspoon ground cumin
• 1/2 teaspoon dried thyme
• 1 1/4 cups (250 g) brown or green lentils, rinsed and picked over
• 1 medium Yukon Gold potato, diced small
• 1 can (14.5 oz / 411 g) diced tomatoes
• 6 cups (1.4 L) low-sodium gluten-free chicken broth
• 1 bay leaf
• 3/4 teaspoon kosher salt, plus more to taste
• 1/2 teaspoon black pepper
• 2 cups (60 g) baby spinach
• 1 tablespoon sherry vinegar or red wine vinegar
• 2 tablespoons chopped fresh parsley, for serving