They can but it is not advised
no a chinchilla should not be allowed to eat fleece. many things can cause impactation and kill a chinchilla
Vegetation
eat, sleep, eat, sleep, look cute, run, jump, sleep, nibble, nibble, sleep, eat, pee, poop that's basically what a chinchilla does :D
Eat them
it depends of the tomato
No way It'll kill them
Sure.
NEVER.
Try it. Get a turtle and a round small tomato and see if the turtle can eat the round tomato.
Yes - don't let them be alone. Or, you could keep the chinchilla in a box all the time.
chinchilla should not be given fruit. fruit is gassy and gassy foods can cause a chinchilla to bloat and bloat can kill a chinchilla if not caught in time and treated.
Find another tomato to eat.