In a plastic bag combine the flour, salt, and pepper. Add chicken strips to the bag and shake bag to coat chicken.
In a large skillet heat 2 tablespoons of the butter over medium heat until hot. Add coated chicken strips and cook about 8 minutes or until chicken is tender and no longer pink and coating is golden brown, stirring occasionally. Remove chicken from skillet; keep warm.
Heat remaining butter in skillet until hot. Add chili peppers, onion, and crushed red pepper. Cook and stir about 5 minutes or until tender but not brown, stirring up any browned bits. Add cream to skillet. Bring just to boiling. Return chicken to skillet; stir until combined. Simmer, uncovered, for 1 minute more or until slightly thickened.
Transfer chicken mixture to a serving dish. Sprinkle with cheese. Cover and let stand 2 to 3 minutes or until cheese is melted. Serve over hot cooked fettuccine. Makes 4 servings.