Alter Self states;
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You acquire the physical qualities of the new form while retaining your own mind. Physical qualities include natural size, mundane movement capabilities (such as burrowing, climbing, walking, swimming, and flight with wings, to a maximum speed of 120 feet for flying or 60 feet for nonflying movement), natural armor bonus, natural weapons (such as claws, bite, and so on), racial skill bonuses, racial bonus feats, and any gross physical qualities (presence or absence of wings, number of extremities, and so forth). A body with extra limbs does not allow you to make more attacks (or more advantageous two-weapon attacks) than normal.
Checking the MM on Bonus feats;
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Sometimes a creature has one or more bonus feats, marked with a superscript B^B.
There is no entry for a human to check in the MM, but an example, the Aranea;
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Feats: Improved Initiative, Iron Will^B, Weapon Finesse
And in the PHB for Bonus Feat;
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1 extra feat at 1st level, because humans are quick to master specialized tasks and varied in their talents
And for Elves;
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Weapon Proficiency: Elves receive the Martial Weapon Proficiency feats for the longsword, rapier, longbow (including composite longbow), and shortbow (including composite shortbow) as bonus feats. Elves esteem the arts of swordplay and archery, so all elves are familiar with these weapons.
Human has no mention of Bonus Feats any where, related, whether or not to racial. Racial is something that's common to all the race; and what's common to all human is the additional at 1st level. However, no actual FEAT itself to select.ld select
The only thing that might work is if you can include feats as one of the following bolded;
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You can freely designate the new form’s minor physical qualities (such as hair color, hair texture, and skin color) within the normal ranges for a creature of that kind. The new form’s significant physical qualities (such as [b]height, weight, and gender[b])
YMMV, of course, and many people tend to ignore that, like Drown Healing and that being "Dead" has no mechanical penalties, though. Never said it made sense.
If of course you WERE to select a feat with your DM ruling otherwise, it would have to be one that ANY human, irregardless of class could select at 1st level; so one without prerequisites of any kind. Darkstalker, as mentioned, could work, but Extra Spell wouldn't, as it would require something that a typical human wouldn't have.