Triban Gravel 120

[IronHarlet]

Hi guys, new here (also to cycling) and was hoping for a but of advice. I have a Triban Gravel 120, less than a year old and have been having issues with the chain slipping frequently on gear changes. It's only slipping on the front chain ring (single chainring crankset) and not the derailleur. It's actually falling between the teeth and the cover rather than completely off. I've already changed the chain, to no avail, still experiencing the same problems! Any advice would be really appreciated.

Here's the set up currently:

Derailleur Microshift m665
Casette Microshift H100
Crankset Triban 38

 

[Ajax Bay]

Think that one of these will significantly reduce dropped chain incidence.
https://www.tredz.co.uk/.Gusset-Lil-Chap-Chain-Device_59664.htm
https://bikesy.co.uk/p/triban+grvl+120/
https://www.decathlon.fr/p/pedalier-mono-38t-acier-noir/_/R-p-197562
My other suggestion, given you are losing it outwards, presumably on a shift between smaller sprockets, is that the BB is only a 110.5mm spindle and going to a 115mm BB might just shift the chainline out a bit and reduce incidence.
Current: VP-BC73 (BC1.37x24T 68x110.5) (assumed) - need to check the BB shell is 68 or 73mm
https://www.tredz.co.uk/.Shimano-BB...ions=colour:Silver,option:68-115mm&sku=764670