Chest Development for Arm-Dominant Lifter?

So you’re only doing two bodyweight chest exercises? Any benching with the 5/3/1? Any actual chest isolation exercises?

You could try 1 and a half reps, adding a second bottom-half to each rep, to stress the pecs more. Discussed here. Isn’t really efficient with heavy weights though, so I wouldn’t use it with the 5/3/1 sets, just accessory/volume work.

D-roy raises, mentioned here can also help at the start of the chest-focused work.