Yes,
[ext-letsencrypt]
showInterface
1
[ext-letsencrypt]
rsa-key-size
2048
The size of the RSA private key, in bits.
[ext-letsencrypt]
acme-challenge-token-expiration-interval
30
[ext-letsencrypt]
pending-authorization-request-retry-after
2
[ext-letsencrypt]...