Preheat your oven to 400°F (200°C) and lightly grease a small oven-safe baking dish.
In a skillet over medium heat, add the olive oil and sauté the fresh spinach until just wilted, then remove from heat.
In a medium mixing bowl, combine the Greek yogurt, grated parmesan, garlic powder, sea salt, black pepper, chopped artichoke hearts, and the sautéed spinach.
Cut the chicken breast into bite-sized cubes and place them in an even layer at the bottom of the prepared baking dish.
Spread the creamy spinach and artichoke mixture evenly over the chicken pieces.
Sprinkle the shredded mozzarella cheese over the top of the mixture.
Bake for 20-25 minutes, or until the chicken is cooked through and the cheese is golden and bubbling.
While the chicken bakes, steam the cauliflower rice until tender.
Serve the creamy chicken bake hot over the bed of cauliflower rice.