Sauté vegetables: Heat olive oil in a large pot over medium-high heat. Add onion and garlic and cook until softened, about 5 minutes.

Cook turkey: Add ground turkey and cook until browned, breaking it up with a spoon. Remove from pot and set aside.

Add vegetables and beans: Return the pot to the stove and add bell pepper, black beans, white beans, diced tomatoes, fire-roasted diced tomatoes, kidney beans, chili powder, cumin, cayenne pepper, oregano, thyme, salt, and pepper. Stir to combine.

Simmer: Bring to a simmer and cook for 30 minutes, or until flavors have blended.

Add spinach and broth: Stir in spinach and chicken broth. Cook for 5 minutes, or until spinach is wilted.

Serve: Serve hot with your favorite toppings, such as shredded cheese, sour cream, avocado, or tortilla chips.