In a mixing bowl stir together all ingredients EXCEPT the chicken and the artichoke hearts. Set aside and let the herbs rehydrate and the flavors all come together.
Place the chicken into your slow cooker. Pour your seasoning mixture over the chicken. Move everything around so that the ingredients are evenly distributed throughout the pot. Cook on high for 4 hours or low for 6. Cook until chicken shreds easily.
Add artichoke hearts a few minutes before serving, just to warm them in the sauce.