In a large bowl, mix the meatball ingredients and make equal size meatballs.
In a dutch oven/pot, heat 2 tablespoons of olive oil and brown the meatballs in batches and set these aside once ready. This should be a short process as you just want to brown the meatballs.
Add another tablespoon of oil to the pot and fry the chopped onion and green chilies for 5 minutes.
Mix in the garlic and cook further for about 30 seconds or just until fragrant.
Add in the harissa paste, cumin, coriander and fennel and cook for 2 minutes.
At this point, you can add the smoked paprika, fresh tomatoes, canned tomatoes, 1 cup of water and salt.
Once the gravy comes to a boil, add the meatballs. Cook for 10-15 minutes till gravy thickens.
Mix in the peppers and cook for a further 5 minutes.
Lastly add the cooking cream and sprinkle some cilantro/mint over the stew.