Same word as overindulgent:

dizzying, egregious, enormous, exaggerated, exorbitant, extravagant, inordinate, intemperate, overindulgent, profligate, steep, too much, too-too, towering, unbalanced, unbridled, uncalled-for, unconscionable, uncontrolled, undue, unjustified, unmeasurable, unreasonable, unrestrained, unwarranted, wanton