Pat the shrimp dry. Moisture is the enemy of a good sear. Blot the shrimp with paper towels, then toss with 1 tablespoon olive oil, smoked paprika, onion powder, 1/2 teaspoon salt, and black pepper.
Preheat your pan. Heat a large skillet over medium-high.
Add 1 tablespoon olive oil and 1 tablespoon butter. When the butter foams, it’s ready.
Sear the shrimp. Add shrimp in a single layer. Cook 1–2 minutes per side until pink and opaque.
Do not overcook. Transfer to a plate.
Build the garlic-lemon sauce. Reduce heat to medium. Add 1 tablespoon butter and the minced garlic.
Cook 30–45 seconds, stirring, until fragrant. Add red pepper flakes (if using), lemon zest, and broth. Simmer 1 minute to reduce slightly.
Finish the shrimp. Return shrimp (and any juices) to the pan.
Add lemon juice and 1 tablespoon butter. Toss 30–60 seconds to coat. Taste and adjust salt and lemon to your liking.
Turn off heat and stir in parsley and chives.
Sauté the cauliflower rice. In a second skillet (or wipe the first), heat 1 tablespoon olive oil over medium. Add riced cauliflower and a pinch of salt. Cook 4–6 minutes, stirring, until tender but not mushy.
If using frozen, cook off excess moisture. For extra richness, stir in 1 teaspoon butter at the end.
Assemble the bowls. Spoon cauliflower rice into bowls. Top with garlic shrimp and plenty of pan sauce.
Finish with Parmesan (optional) and extra lemon wedges.