In a medium bowl, combine the diced chicken breast with Greek yogurt, garam masala, turmeric, and sea salt until evenly coated.
Heat the ghee in a large skillet over medium-high heat.
Add the marinated chicken to the skillet and sear for 5-6 minutes until golden brown on all sides, then remove chicken and set aside.
In the same skillet, add the diced yellow onion, minced ginger, and minced garlic, sautéing for 3-4 minutes until the onion is translucent.
Stir in the tomato puree and full-fat coconut milk, bringing the mixture to a gentle simmer while scraping up any browned bits from the bottom of the pan.
Return the chicken to the skillet and simmer for 8-10 minutes until the sauce has thickened and the chicken is cooked through.
While the chicken simmers, steam or sauté the cauliflower rice in a separate pan until tender.
Serve the creamy chicken tikka masala over the cauliflower rice and garnish with fresh chopped cilantro.