Prep the sausage and veggies: Slice the smoked sausage into 1/2-inch coins.
Slice the onion and peppers into thin strips. Mince the garlic.
Heat the pan: Place a large skillet over medium-high heat. Add olive oil and let it shimmer.
Brown the sausage: Add the sausage coins in a single layer.
Cook 3–4 minutes per side until browned and slightly crisp around the edges. Remove to a plate.
Sauté the vegetables: In the same pan, add onion and peppers with a pinch of salt. Cook 5–7 minutes, stirring occasionally, until softened and lightly caramelized.
If the pan looks dry, add another teaspoon of oil.
Add garlic and spices: Stir in garlic, smoked paprika, and Italian seasoning. Cook 30–60 seconds until fragrant.
Combine and season: Return the sausage to the skillet. Toss everything together and season with salt and pepper.
If using soy sauce or Worcestershire, add it now.
Finish with add-ins: Stir in any quick-cooking veggies like frozen corn or peas. Cook 2–3 minutes until heated through. For a little heat, sprinkle in red pepper flakes.
Serve: Spoon the sausage and peppers over warm rice, pasta, or potatoes.
Garnish with chopped parsley or green onions if you like.