Heat a medium skillet over medium heat. Add cauliflower rice, butter, onion, and garlic. Sauté 5 minutes, until onion is tender and rice is beginning to brown, then add paprika, cayenne pepper, oregano, and basil. Toss well.
Rub the raw shrimp with Cajun seasoning, salt, and pepper.
Heat a large skillet over medium heat. Add olive oil. When the oil is hot, add shrimp and cook 2-3 minutes until just seared. Remove from pan.
Add the garlic, sauté for 1 minute then stir in the butter. Pour white wine, lemon juice, and lemon zest. Simmer until slightly thickened.
Turn off the heat and add the shrimp back into the sauce. Simmer until shrimp is opaque but not rubbery. Be careful not to overcook your shrimp.
To serve, spoon the shrimp and sauce over the cauliflower rice.