Creating Dump-and-Bake Chicken Tzatziki with Rice is simple when you follow these easy steps:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Prepare Ingredients: Gather all your ingredients and start by grating the cucumber.
3. Make Tzatziki Sauce: In a medium bowl, combine the Greek yogurt, grated cucumber, olive oil, minced garlic, lemon juice, dill, salt, and pepper. Mix well and set aside.
4. Prepare Chicken: In a baking dish, place the chicken breasts. Season with salt, pepper, paprika, onion powder, and oregano.
5. Add Rice and Broth: Sprinkle the uncooked basmati rice over the chicken. Carefully pour the chicken broth over the rice, ensuring all the rice is submerged.
6. Bake: Cover the baking dish with aluminum foil and bake in the preheated oven for 30 minutes.
7. Uncover and Continue Baking: After 30 minutes, remove the foil. Bake for an additional 10-15 minutes, or until the chicken is cooked through and the rice is tender.
8. Rest: Once cooked, remove the dish from the oven and let it rest for 5 minutes before serving.
9. Serve with Tzatziki: To serve, spoon the tzatziki sauce over the chicken and rice. Garnish with fresh parsley if desired.

Following these simple instructions will guide you to creating this beautiful dish effortlessly.