Sure! I’m not sure if a cockerel at less than 16 weeks needs special cooking to be edible. We expect to cull no later than June 22, possibly sooner. Therefore not older than 16 weeks I think.
If you are used to store bought chicken and plan to fry or grill him you nay find the meat kind of tough or maybe even a little strong-flavored. He looks to be maturing early so the hormones will start to have an effect. Some people fry or grill up to 16 weeks and are quite happy with the results. Others have younger cut-off dates. You can certainly try and see how it goes.
But if the results are not great, the way I cook an older cockerel is to cut him into serving pieces, coat those with herbs, and cook him in tightly sealed baking pot at 250 degrees. For one that young 2-1/2 hours is plenty. For older birds I sometimes go 4 hours at 250. Others have their own recipes.