Cook the chicken breast, previously seasoned with salt and pepper, inside the chicken broth in medium heat for 15 minutes.
Shred the chicken. In a big pan add some oil and put the onion and the garlic to cook for a couple minutes. Add the shredded chicken and stir for 5 minutes.
In a bowl add the avocado, the green peas, the chicken and the mayo. Mix well and add a pinch of salt and pepper. Fill the arepa and enjoy!