Hell yes I use prepacked red pepper. If it comes with your delivery pizza, save it. Mostly for use when camping, but sometimes you can bust it out and make it work. I tossed the beans and spices with walnuts and tarragon in lieu of the recipe's almonds and cilantro. Work with what you got - plus I am obsessed with tarragon. Which is odd since I don't really like black licorice favor, but this is not the time for soul searching. Or maybe it is.
UPDATE: The bread didn't rise, but was delicious anyway. Mike and I ate pretty much the whole loaf. I recommend the recipe, but only if you have more self control than we do.