Cut the chicken breast into bite-sized cubes and season with the sea salt and black pepper.
Heat the avocado oil in a large skillet over medium-high heat and sear the chicken until golden brown on all sides, then remove and set aside.
In the same skillet, sauté the diced yellow onion until translucent and soft.
Stir in the minced garlic, grated ginger, garam masala, and turmeric, cooking for 1 minute until fragrant.
Pour in the tomato puree and coconut milk, stirring to combine into a smooth sauce.
Return the chicken to the skillet and simmer on low heat for 8-10 minutes until the sauce has thickened and the chicken is cooked through.
While the chicken simmers, lightly sauté or steam the cauliflower rice in a separate pan until tender.
Divide the cauliflower rice into bowls, top with the creamy chicken tikka masala, and garnish with fresh cilantro.