You should not be using the same IP addresses for your resolvers that you use for your name server IP addresses unless you have manually configured your server to allow recursion. Typically, you will configure your resolvers with the IP addresses that your data center provides, or with generic resolvers such as:
4.2.2.2
8.8.8.8
The functionality of the "Nameserver IPs" page is for visual purposes only. It is a report, and not a page meant to configure any aspect of DNS. It reports the nameservers used by DNS zones on the server, as well as a count of the the number of zones that use a given nameserver. The important entries on the cPanel server are the "A" records that you have added for your name servers. Thus, as long as you have registered these name servers to the matching IP addresses at the domain registrar, then no further DNS configuration is required. The "Nameserver IPs" page can include cached data, so you can safely ignore any mentions of "No IP" on that page as it may take some time before it updates.
Thank you.