Cook pasta according to package directions. Drain; keep warm.
Meanwhile, melt butter in 12-inch skillet until sizzling; add chicken strips. Cook over medium-high heat, stirring occasionally, until chicken is no longer pink (5 to 7 minutes). Add green pepper and onion. Cover; continue cooking until vegetables are crisply tender (5 to 7 minutes).
Add cooked pasta, whipping cream and ham. Cover; continue cooking until heated through (3 to 5 minutes). Stir in cheese, tomatoes, salt and pepper.