I assume you are talking about the fee to open a channel not the fee paid to Alby to host the node.

For the channel fee the reason it may have spiked is that to opening a lightning channel you must do an on chain bitcoin transaction. You may have first looked at a time with low on chain fees and then at a time when the fees spiked.

Perhaps someone from nostr:nprofile1qqsyv47lazt9h6ycp2fsw270khje5egjgsrdkrupjg27u796g7f5k0spzemhxue69uhk2er9dchxummnw3ezumrpdejz7qgwwaehxw309ahx7uewd3hkctcprdmhxue69uhkummnw3ez6vfwde3x7tnpdenkzmnf9e3k75xqss4 will be able to provide you with some clearer details. nostr:nprofile1qqstqq490lumzlykftdw23p7ehxzje022az465zud6path3p5c8vefgpzpmhxue69uhkummnw3ezuamfdejsz9mhwden5te0w4kkyun9dshxcmmrv9kr5dpcxsuqaux43l