Preheat your oven to 425°F.
In a bowl, toss the cauliflower with olive oil, salt, and pepper until evenly coated.
Spread the cauliflower on a baking sheet and roast in the oven for about 20-25 minutes, or until tender and slightly browned.
While the cauliflower roasts, season the chicken breast on both sides with salt, pepper, ground cumin, paprika, and garlic powder.
Heat a non-stick skillet over medium-high heat and cook the chicken breast for about 5-6 minutes per side, or until fully cooked and golden brown on the outside.
Once cooked, remove the chicken and let it rest for a few minutes.
In a small bowl, stir the nonfat Greek yogurt. Optionally, add a pinch more of the spices to mirror the chicken's flavor.
Slice the chicken breast and serve over the roasted cauliflower, drizzling the creamy yogurt sauce on top.
Enjoy your healthy, flavorful, and creamy spiced chicken dish!