Heat olive oil in a large Dutch oven or soup pot over medium heat.
Add onion and red bell pepper.
Cook for 5 minutes until softened.
Add garlic and cook for 30 seconds.
Add the ground turkey.
Break apart with a wooden spoon and cook until fully browned.
Add tomato paste, chili powder, smoked paprika, cumin, garlic powder, onion powder, Cavender's Greek Seasoning, oregano, and black pepper.
Cook for 1 minute while stirring to toast the seasonings.
Add black beans, fire roasted tomatoes, and chicken broth.
Stir thoroughly to combine.
Bring to a gentle boil.
Reduce heat and simmer for 30 to 40 minutes, stirring occasionally.
To make the tortilla chips, cut corn tortillas into triangles.
Lightly coat with oil.
Bake at 400 degrees for 8 to 10 minutes until crisp or fry in hot oil until golden.
Season immediately with salt.
Ladle the chili into serving bowls.
Top with cheddar cheese, cilantro, green onions, sour cream, and avocado slices.
Serve hot with crispy tortilla chips.