Sauté the Aromatics: Heat the extra virgin olive oil in a large Dutch oven or heavy-bottomed stockpot over medium heat.
Sweat the Veggies: Add the diced onion, carrots, and celery to the pot. Sauté for 6 to 8 minutes, stirring occasionally, until the vegetables begin to soften and the onions turn translucent.
Bloom the Spices: Add the minced garlic, ground cumin, sweet paprika, and dried oregano. Stir continuously for about 1 minute to bloom the spices and coat the vegetables in the aromatic oils.
Add Liquid and Simmer: Pour in the rinsed lentils, vegetable broth, and add the bay leaf. Stir well, ensuring you scrape up any delicious browned bits from the bottom of the pot.
Cook the Lentils: Bring the soup to a rolling boil, then immediately turn the heat down to low. Cover with a tight-fitting lid and simmer gently for 35 to 40 minutes, or until the lentils are completely tender but still hold their shape.
Finish and Serve: Remove the pot from the heat and discard the bay leaf. Stir in the fresh lemon juice and chopped parsley. Season generously with sea salt and black pepper to taste. Ladle into bowls and serve hot (with an optional extra drizzle of olive oil on top!).