Prep the ingredients per the instructions above.
Season the chicken on both sides with salt and pepper.
Heat half of the oil in a pot over medium heat. Saute the garlic and ginger for 30 seconds until fragrant. Add in the sliced mushrooms and cook for 3-5 minutes or until softened.
Stir in the broth and soy sauce and bring to a simmer. Gently lower the eggs in their shells into the broth using a slotted spoon and let simmer for 6 minutes (for a runny yolk) or 8 minutes (for a hard yolk). Set a timer for the eggs. Once the timer goes off, remove the eggs from the pot with a slotted spoon and place them in a bowl of cold water. While the eggs are cooking, cook the chicken.
Set a skillet over medium heat. Once hot, add the remaining oil and cook the chicken until golden brown on both sides to an internal temperature of 160°F (71°C) using a thermometer. Set aside to rest for 3 minutes before slicing.
To the pot of simmering broth, add the ramen noodles and kelp and cook the noodles according to the instructions on the package. Season with salt and pepper to taste. Add more broth if needed to your liking.
Gently crack the egg shells, then carefully peel the shells from the eggs.
Make the spritzer: Mix all the ingredients together. Serve over ice if desired.
Serve: Portion the soup into bowls. Top with chicken and eggs (sliced in half lengthwise). Enjoy with the spritzer.