
Heat the butter and olive oil in a large pot over medium heat. Add the diced onion, garlic, and jalapenos, then cook for 4 to 5 minutes until the onion softens and becomes fragrant.

Stir in the diced rotisserie chicken, taco seasoning, and chicken broth. Mix well and bring the soup to a gentle simmer.

Add the Rotel, chili beans, ranch beans, and fire-roasted diced tomatoes. Season with salt and pepper, chili powder, and Tony Chachere's seasoning. Simmer on low for 20 to 25 minutes, stirring occasionally, until heated through and flavorful. Serve hot with tortilla strips, shredded mozzarella, or cornbread if desired.
