Heat a large, heavy-bottomed pot over medium-high heat with olive oil.
Add the onion and jalapeño and cook until the onion begins to soften.
Add the garlic, dried oregano, and chili powder.
Stir until everything is well combined.
Pour in the chicken bone broth.
Add the chicken along with the salt and pepper.
Bring the mixture to a boil, then reduce the heat to a simmer.
Cover and cook for 10 to 15 minutes, until the chicken is fully cooked.
While the chicken cooks, mix the cornstarch and water together in a small bowl until smooth.
Remove the cooked chicken from the pot and place it on a plate.
Shred it using two forks.
Add the shredded chicken back into the pot.
Stir in the sour cream, shredded cheese, corn, cilantro, and lime juice.
Give the cornstarch mixture a quick stir and add it to the pot.
Mix well and simmer uncovered for about 10 minutes, stirring occasionally, until thickened.
Divide into bowls and add your favorite toppings before serving.