Bring a large pot of lightly salted water to a boil. Add fettuccini pasta and cook for 8 to 10 minutes or until al dente; drain.
In a skillet over medium heat saute chicken and garlic in oil until brown and cooked thoroughly. Add chicken broth, white wine, peas, and parsley; bring to a boil. Reduce heat and simmer for 15 minutes.
Remove from heat and add tomatoes, onions and cayenne pepper. Toss sauce with cooked pasta. Serve topped with Romano cheese and more sauce.