Crush buttery crackers (ritz or saltines are good)
mix paprika, garlic powder, onion salt, pepper, parsley and chili powder with the crackers
Melt butter with diced garlic and salt
Wash fish fillets - coat in butter mix and coat in the crumb mixture (shake n bake style)

Slice red or new potatoes and do the same with them - bake in the oven in the same pan.