There is nothing wrong with giving the entire fidyah to one poor person

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Check below answers in case you are looking for other related questions:
The amount of fidyah mentioned in the verse on fasting
Guideline on moving from fasting to feeding the poor in the case of expiation for intercourse during the day in Ramadan

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Related Answers:
How can he make up missed fasts?
Can we feed non-Muslims when offering fidyah for not fasting?
He travelled to a house of his in Madinah and had intercourse during the day in Ramadan without ejaculating
The amount of fidyah mentioned in the verse on fasting
Guideline on moving from fasting to feeding the poor in the case of expiation for intercourse during the day in Ramadan

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