Slice log of mozzarella cheese in half lengthwise and then cut each half into ¼” slices; set cheese aside.
Repeat the same process with the Roma tomatoes (slice in half lengthwise and then cut into ¼” slices.)
Using a small dish, combine Italian seasonings, salt and pepper.
Drizzle lemon juice and olive oil evenly onto both sides of chicken breasts and then sprinkle evenly with Italian seasonings mixture.
Using a sharp knife, cut deep slices every 1” in top of each chicken breast. (Note: Do not cut all the way through.)
Insert one slice of cheese and one slice of tomato into each of the slits. Place chicken breasts on a foil-lined sheet pan.
Bake uncovered for 28-30 minutes, or until chicken is fully cooked (internal temperature of 165°F). (Note: Baking times will vary depending on size of chicken breasts. Continue cooking until chicken is no longer pink.)
Meanwhile, cook pasta according to package instructions.
Garnish with chopped basil and serve over cooked pasta with marinara sauce.