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 heat. Add sliced sausage in a single layer and cook for 3-4 minutes, turning occasionally, until nicely browned and caramelized on both sides.
03 - Add onion to the skillet with the sausage. Sauté for about 3 minutes until softened and translucent. 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 combine, using a wooden spoon to scrape up any browned bits from the bottom of the skillet. Bring the mixture to a gentle simmer.
05 - Return cooked pasta to the skillet. Toss vigorously to coat evenly with the sauce. Reduce heat to medium-low and simmer for 4-5 minutes, stirring occasionally, until sauce thickens and clings nicely to the pasta.
06 - Season with chili flakes and black pepper to taste. Remove from heat immediately. Sprinkle with fresh chopped parsley and serve hot while the sauce is still glossy and coating the pasta.