When you say you "no spice" does that mean that you do not care for any herbs or seasonings or just "peppery" things?
Marjoram, thyme, rosemary, savory, sage, or basil, etc are additions that can add tremendous flavor enhancements but no heat. Onions, carrots, garlic, celery, and bell peppers (sweet not hot) also add flavor but not heat. Moderate amounts of salt and pepper can also be used.
Salt pork, smoked turkey parts, liquid smoke or ham also can add flavor without heat. Flavorful stock (chicken, ham, etc) preferably homemade are also good additions.
Black eyed peas like most beans are similar to potatoes and rice - a good base to add other flavors to. Rice is a good accompaniment too.