NO, that much oil is not normal.
If you are not Over Filling?
Check the oil HOT right after a run. That will tell you truthfull level.
It could be bad valve seals causing this oil consumption...
How is the compression?
Does it Smoke a little... Synthetic oil is hard to see IF burning in a small amount. (even harleys)
Look at the plugs and see IF one is wet with oil or Black from burning it. For you at home, this might be a good place to start.
IF under Warranty, take it in to the HD shop and keep the Dates and Miles and Amounts of Oil you have added...
HD used to have an amount of oil Needed for using Before they would do anything about.
Long ago 00 FXDS bike, used a lot of oil,,, Nothing being done so I tore it apart to find the valve seals loose One totally off and the others Loosely, finger tight.
The did the new seals but I never got any compensation for the apart and together..
From that time on, I have Done My Own Work... :53::53::53::53::53:
signed....BUBBIE
IF all you have used is a quart in 4500 miles?????????