Heat oil in pot over medium heat, add onions and saute until translucent
add green pepper and jalapenos, let cook for a minute, turn heat to medium low.
Add tomatoes and seasoning salt, stir and simmer for 10 minutes.
Just before serving, add cheese—start with about 500 g first before decideing whether you need to add the whole amount—let melt and transfer to chafing dish or crock pot. Serve with tortilla chips.