In large pot or Dutch oven, heat butter on medium. Add onion and garlic and cook 5-10 minutes or until onion is translucent.
Add potatoes, corn, broccoli, paprika, thyme, salt, pepper, lemon juice and zest, and chicken broth and bring to a boil.
Boil on medium/high for 30 minutes uncovered (to cook and reduce broth).
Reduce heat to medium. Add shrimp and cook for 5 minutes.
Reduce heat. Add cream and heat for 5 minutes without boiling
Top with parmesan and chives if desired.
Serve right away with biscuits or crusty bread and a side salad.