Welcome to you and Tucker!
I would recommend talking with Tucker's vet and/or a canine nutritionist for good quality food recommendastions for one prone to pancreatitis. If there is a canned version here is my suggestion for a treat. Open the can and thinly slice the food. Lightly spray a piece of foil with a cooking spray and wipe off excess. Put the food slices on the tinfoil and bake at 175 to 200 degrees until it is completely dehydrated. Cool and store in a sealed container or zip lock bag.