In a slow cooker combine the potatoes, onion, corn, chicken broth, salt, pepper, thyme, basil, and onion powder.
Cook on low for 6 to 8 hours or high for 3 to 4 hours.
Combine a the half and half and the corn starch in a small bowl, whisking until smooth. Stir in the mixture with the bacon and cook 10 to 15 minutes more on high or until the sauce is thickened.