There are a few things you must completely avoid, such as alcohol and fried/greasy/high fat foods (such as creamy sauces, fast food, full fat meat and dairy, and anything fried). These foods can cause your pancreas to release more enzymes at once than it normally would, leading to an attack. There are also foods that you should eat only sparingly, if at all. These include refined carbohydrates (white bread, sugar, and high fructose corn syrup) which cause your pancreas to release more insulin than more wholesome complex carbohydrates (such as whole grains, fruits, vegetables, and legumes). In general, I recommend minimizing processed foods, which are either high in fat, high in refined sugars, or sometimes both.
The best food choices for those suffering from chronic pancreatitis are fruits, vegetables, whole grains, legumes, and nonfat/low fat dairy, and lean cuts of meat. Healthy fats such as avocado, olive oil, fatty fish, nuts, and seeds, may be consumed with careful portion control.
You can also seek the assistance of a Registered Dietitian (RD).