Combine the water, kosher salt, peppercorns, and garlic cloves together in a glass dish. Stir until the salt dissolves in the water.
Add the chicken breasts and let it sit for 30 minutes.
Preheat the oven to 450 degrees.
Coat a baking dish with cooking spray.
Rinse the chicken breasts, pat them dry with a paper towel then season both sides with garlic powder, paprika, sea salt, and freshly cracked pepper, to taste.
Place into the baking dish and bake for 20-25 minutes, or until the chicken is at an internal temperature of 165 degrees.
Remove from the oven and let the meat rest for 5-7 minutes. Slice and serve. Enjoy.