Meanwhile, in a large skillet, cook the bacon until crisp. Remove to paper towels to drain, reserving 1-2 tablespoons drippings.
Saute the chicken in drippings until no longer pink. Add the mushrooms and green onions; cook until mushrooms are tender. Add garlic; cook 1 minute longer. Stir in the cream, cheese, paprika and pepper. Reduce the heat; simmer, uncovered, for 5-10 minutes. Stir in the reserved bacon.
Drain fettuccine; place in a serving bowl. Add chicken mixture; toss to coat. Garnish with additional cheese.