Select saute setting on a 6-qt. electric pressure cooker and adjust for medium heat; add 1 tablespoon oil. When oil is hot, cook and stir sausage until lightly browned, 5-7 minutes; remove and keep warm. Sprinkle chicken with Cajun seasoning; add to pressure cooker; cook and stir until no longer pink, 5-7 minutes. Remove and keep warm. Add remaining 1 tablespoon oil, onion, green pepper, celery and garlic. Cook and stir until crisp-tender, 2-3 minutes. Stir in rice. Add broth and wine, stirring to loosen browned bits from pan. Press cancel.
Lock lid; close pressure-release valve. Adjust to pressure-cook on high for 4 minutes. Let pressure release naturally.
Select saute setting and adjust for medium heat. Add sausage, chicken, cheese, tomatoes, parsley and pepper. Cook and stir until heated through. If desired, garnish with additional parsley and Parmesan cheese.