In a large pot, heat the olive oil over medium heat. Add in the onion, carrots, and celery. Cook until the onion is softened, about 5 minutes. Stir in the garlic and cook for another 60 seconds or until fragrant.
1 tbsp olive oil, 1 yellow onion, 2 medium carrots, 2 stalks celery, 3 cloves garlic
Stir in the lentils, ham, chicken broth, water**, salt, cumin, smoked paprika, and pepper. Bring to a boil, reduce to a simmer, cover and cook until the lentils are tender, 45 minutes to 1 hour.
1½ cups dried brown lentils*, 1½ cups diced cooked ham, 4 cups low sodium chicken broth, 2 cups water, 1 tsp kosher salt, 1 tsp cumin, 1 tsp smoked paprika, ½ tsp pepper