Why does Mrs Hall find the scientist eccentric?
Mrs Hall finds the scientist eccentric due to his uncommon appearance and strange habits. He informed her that he came to Iping for solitude and did not wish to be disturbed in his work. He also stated that an accident had affected his face, which is why he always wore clothes and bandages.
Additionally, his irritable temper made him furious if anyone entered his room, which he always kept shut and locked. However, Mrs Hall was prepared to excuse his eccentricities because he had paid her in advance.
Explanation
Mrs Hall considers Griffin an eccentric scientist based on his bizarre physical appearance—wrapped in bandages and wearing dark clothes—and his antisocial behaviour. He explicitly demands solitude and reacts with fury if his locked room is entered. The text notes that she tolerates his strange habits and irritable temper largely because he pays in advance.