Cook on low for 4-5 hours or 2-2.5 hours on high, until easily shredded with 2 forks.
Shred with forks or a stand mixer and return to crock pot.
Butter sub roll insides and toast in a med-high skillet or griddle.
Slice tomatoes and place on one side of the roll, topping with shredded chicken.
If desired, slice pepperoncini and place on top of the chicken.
Top sandwiches with french fried onions and top sub roll. Slice sandwiches in half before serving if desired.
The chicken is very juicy, so toasting the rolls help keep the bun from getting too soggy. This is however a very messy sandwich to eat (although very rewarding for the trouble!).
Looking for more recipes? Our Recipe Finder can help you find exactly what you need.
Check out all our favorite recommendations for cookbooks, slow cookers and low carb essentials in our Amazon Influencer Shop.
As with any of our recipes, carb counts, calorie counts and nutritional information varies greatly. As a result, your nutritional content depends on which products you choose to use when cooking this dish. The auto-calculation is just an automated estimate and should NOT be used for specific dietary needs.
All slow cookers cook differently, so cooking times are always a basic guideline. Recipes should always be tested first in your own slow cooker and time adjusted as needed.