Least efficient players in the NBA averaging at least 15ppg so far: Brandon Miller (46.5% TS), AJ Dybantsa (48.5%), Naz Reid (49.0%), Joel Embiid (49.7%), Cam Boozer (50.4%), LeBron James (50.5%), Scottie Barnes (52.2%), Darryn Peterson (52.5%), Caleb Wilson (52.2%), Jeremiah Fears (52.6%)
Source
Brandon Miller - 20.6ppg on 46.5% TS
AJ Dybantsa - 15.0ppg on 48.5% TS
Naz Reid - 17.3ppg on 49.0% TS
Joel Embiid - 17.9ppg on 49.7% TS
Cam Boozer - 15.9ppg on 50.4% TS
LeBron James - 15.1ppg on 50.5% TS
Scottie Barnes - 23.5ppg on 52.2% TS
Darryn Peterson - 16.3ppg on 52.5% TS
Caleb Wilson - 18.9ppg on 52.5% TS
Jeremiah Fears - 15.3ppg on 52.6% TS
Edit: I missed Acuff. He is tied for 10th at 26.2ppg on 52.6% TS