Your plant is not going to die.
The small round "leaves" are not actual leaves, but cotyledons.
They have no bearing on the plants life or health, their only purpose is to protect the growig tip as it pushes through the soil.
For them to have weird colours or shapes is completely normal.
You have nothing to worry about.
It is not a sign of anything.
Cannabis plants have grown outdoors in direct, strong sunlight for thousands of years without issues.