While that is cooking, in a large bowl combine oregano, onion powder, garlic powder, black pepper, red pepper flakes and Salt for Life - combine to make spice mixture. Fold in parmesan and ricotta cheeses.
Mix cooled corn and chard mixture into the seasoned ricotta.
Scoop ricotta mixture into each shell, filling completely.
Line the shells in the baking sheet side by side and drizzle with olive oil and lemon juice (optional, add shredded mozzarella to top).
Bake in a 350 degree oven for 17-20 minutes until the cheese is melted and bubbling.
Top with more olive oil if desired before serving.
Recipe by DomestikatedLife at https://domestikatedlife.com/2016/04/25/sweet-corn-and-chard-stuffed-shells/