Cut the tofu, zucchini, onion, potato, spicy chili, and green onion into bite-sized pieces.
Prepare broth by boiling anchovies and kelp.
Pour the broth into a pot and add potato, zucchini, and onion. Bring to a boil.
Add soybean paste and red pepper paste, stirring to dissolve.
Add extra tofu and simmer.
Add spicy chili and green onion, simmer a bit more.
Taste the stew and adjust seasoning with salt if needed.