Select saute setting on a 6-qt. electric pressure cooker and adjust for medium heat; add 1 Tbsp. butter. When hot, add mushrooms; cook until tender, 3-4 minutes. Remove. Sprinkle chicken with salt, pepper, Italian seasoning and paprika. Place flour in a shallow bowl. Add chicken, a few pieces at a time, and toss to coat; shake off excess., Heat the remaining butter in pressure cooker; brown chicken on both sides. Remove. Add the broth and wine to pressure cooker. Cook 2-3 minutes, stirring to loosen browned bits from pan. Press cancel., Return chicken and mushrooms to cooker; add green onions. Lock lid and close pressure-release valve. Adjust to pressure-cook on high for 10 minutes. Let pressure naturally release for 10 minutes and quick-release any remaining pressure. (A thermometer inserted in chicken should read at least 165°.)