Pound chicken to 0.6" at the thickest part with a meat mallet, rolling pin, your fist or even a heavy cast iron skillet. This step will help the chicken to cook evenly.
Mix all the spices (paprika, dried oregano, garlic powder, salt and pepper) in a small bowl.
Line baking dish or roasting pan with parchment paper. Place the chicken breasts in a single layer.
Bake for about 18-20 minutes, or until it gets the internal temperature of 165˚F. To know exactly when it is fully cooked, use a meat thermometer.
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