Add all the sauce ingredients and stir to combine.
Add the chicken thighs and turn to fully coat them in the sauce.
Cover and cook on low for about 6 hours or on high for about 3 hours, until the chicken is tender and cooked through.
At the end of the slow cooking, boil your noodles according to package.
Easily shred the chicken right in the slow cooker, if it doesn't fall apart easily you can remove and shred.
If the sauce isn't thick enough, you can add another cornstarch slurry.
Add the stir-fry noodles and toss everything together until the noodles are coated in the sauce.
Cover and cook for an additional 5 minutes (if needed), until the sauce has thickened and the noodles are heated through.