Blaze Kick is a really good move, despite only having 90 accuracy. It has 85 BP, and is one of the only good physical Fire moves. It has a high critical hit ratio.
If you want 100% accuracy, Fire Punch is another option. It only has 75 BP, unfortunately. It also has a 10% chance to Burn the opponent.
(Incineroar also learns Fire Fang, but it's weaker than Fire Punch and not really worth mentioning.)
It only has 50 BP, but Incineroar definitely benefits from the speed boost, as it's quite slow with only 60 base speed. Flame Charge can't burn or flinch, but is 100% accurate.