Picture paella night without the carb hangover: riced cauliflower soaks up saffron-tinted broth, while spicy chorizo releases brick-red seasoned oil that perfumes every grain, all topped with plump shrimp.
Render the chorizo: Heat a 12-inch skillet over medium. Add chorizo; cook 3 min until fat renders and edges crisp. Transfer to a bowl, leaving drippings behind.
Sauté aromatics: Add olive oil and onion to drippings; cook 2 min until translucent. Stir in garlic, smoked paprika, and saffron; bloom 30 sec.
Add cauliflower rice: Toss in riced cauliflower and diced tomato; stir to coat in the spiced oil. Pour in stock, season with salt & pepper, and spread mixture flat. Cover and cook 5 min.
Finish with shrimp: Uncover, nestle shrimp on top, sprinkle reserved chorizo over everything. Cover again; steam 3 min until shrimp are opaque.
Serve: Fluff “rice,” garnish with parsley, and squeeze lemon over the pan.