you'll need to do a few things then..
1. make sure that the pfsense install isn't listening on those ports on the wan interface
2. create an allow rule on the WAN interface to allow traffic on ports 443 and 80
3. create a port forward rule in the NAT configuration to forward traffic that hits those two ports to whatever the private IP address of the servers listening on those ports is.
edit: actually don't bother with 2 - just make sure that when you create the port forward you have the Filter Rule Association set to "Add associated filter rule" which will automatically add the rule to the FW..