Jalal had definitely changed, earlier Jalal wanted to conquer India by war. But today's Jalal wants to rule India by winning their hearts rather than just conquering isn't it a great change. I guess that is the main reason for Amer's trip, he wants to win hearts of rajavanshi's.
Earlier Jalal never used to allow anyone to speak against him or his ruling, but now he thinks and holds responsibility for everything that is happening around him. He doesn't jump to conclusions quickly.
Jalal has only few negatives, I guess unknowingly Jodha is triggering the situations which will help him in overcoming all and make him great emperor...which is long way...I guess this is what initial promos also mention...
On side note, he is definitely not faking love, otherwise he had plenty of opportunities to impress Jodha. After Jodha's suicide and Ajmer trip I guess Jalal got few answers on the reason behind Jodha's behavior and attitude towards him. Those few answers are definitely helping him in tolerating Jodha's ghirna and enjoy it.