Preheat the oven to 200°C (400°F). Toss the diced potatoes with olive oil, dried rosemary, garlic powder, salt, and pepper. Roast the potatoes in the oven for 25–30 minutes until they are golden and tender.
In a pot, bring the water to a boil. Add the white rice and a pinch of salt, cover the pot, reduce the heat, and let it simmer for 15 minutes until the rice is fluffy.
In a pan, heat the olive oil over medium heat. Sear the chicken breasts for 5–6 minutes on each side until they are golden brown. Remove the chicken from the pan and set it aside.
In the same pan, sauté the minced garlic for 1 minute. Then, add the chicken broth and heavy cream, stirring until the mixture is slightly thickened. Season the sauce with paprika, dried thyme, salt, and pepper. Return the chicken to the pan and coat it well with the creamy garlic sauce.
To serve, plate the fluffy rice, top it with the roasted potatoes, and then add the creamy garlic chicken. Drizzle any extra sauce over the top for added flavor.