Heat 1 tbsp of olive oil in a large heavy pot with a lid over medium-high heat until shimmering.
Add chopped onions and sautee over medium/medium-high heat for about 4 minutes until softened.
Add in crushed garlic and cook for another 30 seconds until fragrant. Then add in diced green chilis and cook for another minute or so.
Add in cayenne, cumin, chili powder, oregano, garlic powder, salt, hominy, corn and shredded chicken and cook for 1 minute until combined and heated through.
Stream in 4-5 cups of chicken broth bring to a boil. Once boiling, turn heat to low, cover and continue to simmer on low for around 10 minutes.
Remove from heat and stir in sour cream and cilantro.
Squeeze in the juice of 2 limes and taste for seasoning. Add additional salt & pepper if necessary.
If desired, serve with crushed tortilla chips, green onions, avocados, shredded cheese and/or a dollop of whippe cream. Enjoy!