Heat olive oil in a large pot over medium heat. Place the chicken over the pot and sprinkle it with a pinch of salt and ground black pepper, then sear for 2 minutes on each side until lightly browned. Remove the chicken and set it aside.
In the same pot, add the onion, carrot, celery, and jalapeño. Sauté for 4 minutes until softened.
Add the garlic, ground cumin, smoked paprika, and chili powder (if using) and cook for another minute.
Simmer the Soup
Add the chicken broth and return the chicken to the pot. Bring to a boil, then reduce the heat and let it simmer for 15 minutes, or until the chicken is fully cooked (internal temperature of 165°F).
Remove the chicken from the pot and shred it using two forks. Return the shredded chicken to the soup.
Stir in most of the chopped cilantro (reserve some for garnish) and the lime juice. Simmer for an additional 5 minutes.
Ladle the soup into bowls and garnish with the remaining cilantro.
Notes
Adjust the spice by adding or removing jalapeño seeds and tweaking the chili powder to your preference.
Store leftovers in the refrigerator for up to 3 days or freeze for up to 3 months for a convenient meal later.
Thaw overnight in the fridge or defrost in the microwave. Reheat on the stovetop or microwave, adding water or broth if needed.
Enjoy a complete meal with cornbread, tacos, roasted veggies, or a fresh green salad.