Melt the butter in a large saucepan with a tight-fitting lid over medium heat.
Add chicken and brown until cooked through, 4 to 5 minutes; remove from saucepan and set aside.
Add remaining ingredients to saucepan, except pasta. Bring mixture to a boil then add pasta, reduce heat, cover and simmer for 10 minutes, stirring occasionally.
Return chicken pieces to the pasta mixture; cover and simmer for 5 minutes, stirring occasionally.
Serve immediately.