01 - Cook pasta in a large pot of salted boiling water until just al dente. Drain thoroughly and set aside, reserving a small amount of pasta water if needed.
02 - While pasta cooks, heat olive oil in a large skillet over medium heat. Add sliced sausage and cook for 3-4 minutes, turning occasionally, until well-caramelized and browned on both sides.
03 - Add the sliced onion to the skillet with the sausage. Sauté for approximately 3 minutes until translucent and softened. Stir in the minced garlic and continue cooking for 1 minute until fragrant, being careful not to burn.
04 - Pour in the chicken broth, soy sauce, honey, and tomato paste. Stir thoroughly to combine all ingredients, using your spoon to scrape up any browned bits from the bottom of the skillet. Bring the mixture to a gentle simmer.
05 - Add the cooked pasta to the skillet, tossing well to coat evenly in the sauce. Allow everything to simmer for 4-5 minutes, stirring occasionally, until the sauce thickens and clings nicely to the pasta.
06 - Season generously 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 sticky.