A 62-year-old man presents with a 2-day history of fever, productive cough and pleuritic chest pain. He is otherwise well, SpO₂ 95% on room air, RR 20 breaths/min, BP 130/78 mmHg, CURB-65 score 0. Chest X-ray shows right lower lobe consolidation. He has no recent antibiotic use and no significant comorbidities. What is the most appropriate empiric antibiotic choice in the community?