Preheat the oven to 400 degrees. Spray a 9 x 13 inch casserole dish and set aside.
Combine the cooked rice, broccoli, chickpeas, and chicken in a large bowl. Toss to combine and set aside.
Heat the coconut oil in a large skillet. Once hot, add the onions and cook, stirring, until softened. Stir in the garlic and tomato paste. Cook just until the garlic becomes fragrant, about one minute.
Whisk in the milk and reduce heat and cook until it thickens. Stir in the yogurt, cheese, and curry powder. Bring to a simmer, once simmering cook for 2 to 3 minutes stirring constantly until the mixture is thick.
Pour the sauce over the chicken and broccoli mixture. Stir until the chicken is well coated and spread the mixture into the prepared casserole dish.
Bake 15 to 20 minutes or until top just begins to brown.