Pour water or chicken broth inside the insert of your slow cooker.
Pat dry the chicken breasts with paper towels.
Rub the chicken with olive oil and set aside.
In a small mixing bowl combine the salt, black pepper, paprika, garlic powder, onion powder, basil, and oregano; mix until thoroughly incorporated.
Rub the chicken breasts with the seasoning mixture.
Transfer the chicken breasts to the slow cooker.
Cover and cook on LOW for 3 to 4 hours, or until internal temperature of the chicken registers at 165˚F. Use an Instant Read Meat Thermometer to check for doneness.
Remove chicken breasts from the slow cooker and let the chicken rest for about 5 to 8 minutes before cutting and serving.
If you’d like a bit of browning on the cooked chicken, put it under the broiler for about 3 to 4 minutes after you cooked it in the slow cooker.