Cook pasta according to package instructions until al dente. Drain and set aside.
In a large skillet, heat olive oil over medium heat.
Add diced onion and sauté until translucent, about 3-4 minutes.
Stir in minced garlic and cook for an additional minute.
Add sliced chicken sausages to the skillet, browning them for about 5 minutes.
Pour in the crushed tomatoes and stir well.
Season with Italian seasoning, salt, and pepper.
Let the sauce simmer for 5 minutes to combine flavors.
Add the cooked pasta to the skillet and toss to coat in the sauce.
Garnish with fresh basil before serving.