Cook pasta in large saucepan as directed on package, omitting salt.
Meanwhile, heat large nonstick skillet on medium heat 5 min. or until very hot. Top chops evenly with 2 Tbsp. dressing and 1/4 cup cheese; press cheese into dressing to secure.
Add chops, cheese sides down, to skillet; cook 4 min. on each side or until done (145F).
Transfer to plate; cover to keep warm.
Drain pasta; add to skillet with spinach and garlic. Cook and stir 1 min. or just until spinach is wilted. Stir in remaining dressing, cheese and tomatoes; cook and stir 1 min. or until heated through.