Preheat the oven to 450 degrees Fahrenheit. Place the chicken breasts in a baking dish & drizzle with olive oil. Use your hands to rub the oil all over both sides of the breasts.
Wash your hands well with warm water & soap, then make the spice rub. In a small bowl, mix together all of the spices (garlic powder through turmeric). Sprinkle the spice rub over both sides of the chicken breasts, evenly coating them as best you can.
Cut a piece of parchment paper to roughly the same size as your baking dish, and place the paper over the chicken. The edges of the parchment paper should be inside the dish, wrapping down to enclose the chicken breasts.
Pop in the oven and bake for 15-18 minutes (cooking time may be slightly less for small chicken breasts or slightly more for very large ones), or until a thermometer inserted into the thickest part of the breast registers 165 degrees Fahrenheit.
Remove from the oven and let rest for 10 minutes before slicing to let the juices redistribute and not leak out everywhere when you cut the chicken. Enjoy!