Add the onion, bell pepper, jalapeo, garlic and oregano. Season with salt and pepper and cook over high heat, stirring, until lightly browned, 5 minutes.
Add the tomato sauce and water and simmer for 5 minutes, until slightly thickened.
Spoon the sauce into 4 individual, shallow baking dishes and arrange the tortilla chips around the sides. Crack 2 eggs into each dish and sprinkle with the cheese. Set the dishes on a baking sheet and bake for 15 to 20 minutes, until the egg whites are set and the yolks are still runny.