In a small bowl, whisk together the Greek yogurt, garam masala, turmeric, cumin, ginger powder, and garlic powder to create a marinade.
Cut the chicken breast into bite-sized pieces and toss in the yogurt mixture until evenly coated.
Heat the ghee in a large skillet over medium-high heat.
Add the marinated chicken to the skillet and sear until golden brown on all sides, about 5-6 minutes.
Pour in the tomato puree and full-fat coconut milk, stirring to combine with the chicken.
Reduce the heat to low and simmer for 10 minutes until the sauce thickens and the chicken is cooked through.
While the sauce simmers, steam or sauté the cauliflower rice in a separate pan until tender.
Season the gravy with sea salt and black pepper to taste.
Serve the chicken and gravy over the cauliflower rice and garnish with fresh cilantro.