In a large pot, heat 2 tablespoons of oil and add green chili peppers. Toast them up slightly and remove from pot.
Add tomatoes, onions and tomato paste and cook for 5-6 mins on medium-high heat
Add lamb shanks to pot and stir it in with the mixture for 5 minutes until browned. Then add the salt to taste.
Add pepper, ginger, coriander, paprika and turmeric to the lamb.
Add salt to taste, zucchini, butternut squash, potatoes, and carrots. Cook for 3 minutes.
Add 5 cups of boiling water or until all the meat and veggies are covered with water.
Let it simmer for 30 min or until all veggies are soft.
Add the chickpeas to the pot and let it simmer for another 15 minutes
For the couscous, add couscous to a bowl or you can use the tajine. Add 1 tablespoon of olive oil and 3 tablespoons of water. Mix it with your hands.
In a saucepan, add 3 cups of broth from the meat/veggie mixture. Bring to a boil and add salt if needed.
Add couscous mixture into the broth/saucepan and turn off the heat. Let it sit in there for 15 mins and then transfer onto the tagine. Fluff the couscous with a fork.
Arrange the meat and veggies on top of the couscous. Make sure all the veggies are evenly placed. Add 2 laddles of broth on the couscous as well. Enjoy!