Hi, that phrase ' to eat your way to.' means that you are using eating ( food) to achieve your goal.
Eat your way to healthy skin : Eating foods that will cure your skin
Eat your way to parenthood : Eat foods that will boost your chances of having children
Eat your way around the world: Eat in many different countries
It is not a set phrase.
Other examples include:
To sweet-talk your way into your new job.
To sing your way to fame.