In a glass bowl, whisk together the Greek yogurt, garam masala, turmeric, sea salt, and black pepper before tossing in the cubed chicken breast to coat thoroughly.
Heat a large ceramic skillet over medium-high heat with the ghee and sear the chicken for 3-4 minutes until a golden crust forms, then transfer to a plate.
To the same pan, add the grated fresh ginger and minced garlic, sautéing for 60 seconds until the kitchen smells fragrant and aromatic.
Pour in the tomato puree, scraping the bottom of the pan to release the browned bits, and let the sauce simmer on low for 5 minutes.
Stir in the full-fat coconut milk to create a rich, velvety texture and return the chicken to the skillet, simmering for 2 more minutes until fully cooked.
Portion the cooked basmati rice into bowls and top with the spiced chicken and sauce, finishing with a sprinkle of fresh cilantro.