Start by boiling spaghetti in a large pot, according to box instructions. Drain and set aside.
While the spaghetti is boiling chop onions, tomato and bell pepper, if using whole garlic then mince
Lightly season the shrimp with creole spice. Heat oil over medium heat in a heavy bottomed Dutch/ or skillet
Add, about 1-2 tablespoons of oil, followed by shrimp, sauté for about 3-5 minutes or until the shrimp is bright red and begins to curl.
Remove shrimp from skillet and transfer to a plate
Add about 1-2 Tablespoons of butter to the pan. Followed by onions, garlic, tomatoes, thyme, bell pepper, smoked paprika and pepper flakes.
Let it simmer for about for 3-4 minutes, stirring occasionally to prevent any burns.
Pour in chicken stock, and lemon juice. Stir until combined. Cook for about a minute, and then season with salt and pepper.
Add drained spaghetti , shrimp and spinach to the skillet, mix to fully combine all ingredients. Adjust seasoning to taste with salt and pepper
Turn off heat and let it soak up some of the sauce. Serve warm and garnish with lemon wedge.