Heat olive oil in a large heavy-bottomed skillet or cast iron pan over medium-high heat.
Add the sliced sausage rounds to the pan and sear for 6 to 8 minutes, turning occasionally until edges are browned and crispy.
Remove the browned sausage from the skillet using a slotted spoon and set aside on a plate.
In the same skillet, add the sliced onion and bell peppers, sautéing for 5 minutes until the vegetables are slightly softened and charred.
Add the zucchini, minced garlic, oregano, and smoked paprika to the skillet and cook for an additional 4 minutes until the zucchini reaches a tender-crisp consistency.
Return the cooked sausage to the skillet and toss all ingredients together to combine.
Season the mixture with sea salt and black pepper to taste, then cook for 2 minutes to ensure all components are heated through.
Serve immediately as a standalone protein-focused meal or over a bed of grain.