01 - Bring a large pot of salted water to a rolling boil. Add pasta and cook until al dente according to package directions. Drain thoroughly and set aside.
02 - Heat olive oil in a large skillet over medium-high heat. Add sliced sausage in a single layer and cook for 3-4 minutes, turning once, until edges are caramelized and golden brown.
03 - Add onion slices to the skillet and sauté for 3 minutes until translucent and softened. Stir in minced garlic and cook for 1 minute until fragrant, being careful not to burn.
04 - Pour in chicken broth, soy sauce, honey, and tomato paste. Stir thoroughly to dissolve tomato paste and scrape up any browned bits from the bottom of the skillet. Bring mixture to a gentle simmer.
05 - Return cooked pasta to the skillet. Toss well to coat evenly with the sauce. Reduce heat to medium-low and simmer for 4-5 minutes, stirring occasionally, until sauce thickens and clings to the pasta.
06 - Season with chili flakes and black pepper to taste. Remove from heat and sprinkle with fresh chopped parsley. Serve immediately while hot.