Heat the ghee in a large skillet over medium-high heat.
Add the cubed chicken breast and sear until golden brown on all sides, then remove and set aside.
In the same skillet, sauté the diced onion, minced garlic, and grated ginger until fragrant and softened.
Stir in the garam masala, turmeric, sea salt, and black pepper, allowing the spices to toast for 30 seconds.
Pour in the tomato puree and bring the mixture to a gentle simmer.
Return the chicken to the skillet and cook for 5 minutes until the sauce thickens and the chicken is cooked through.
Remove the skillet from heat and stir in the Greek yogurt until the sauce is creamy and well combined.
Steam the cauliflower rice in a separate pan or microwave until tender.
Serve the chicken tikka masala over the cauliflower rice and garnish with chopped fresh cilantro.