Jellal is a genius as well dont forget and not just in magic, hes a master strategist and manipulator, since he has the ability to view Uzi's round 1 fight, he would be aware of her internal explosions, he'll be anticipating her opening move and can counter it with his thought projection magic, as mentioned before it doesnt require hand gestures or verbal components, nor does jellal have to be aware hes even doing it as he originally did the feat while timestopped.
As creating a thought projection doesnt require verbal components, he can activate Meteor out of the gate and at which point she will completely lose track of him via the 30x speed gap. Given Jellals ap advantage here, getting hit with 30 attacks from someone over double your strength before you can even react is imo, enough to take Uzi out. Her Regen would let her survive the first few strikes but any of jellals Aoe spells can vaporize her or his physical strikes can just tear chunks out of her and smash her to bits, just like he did to the Robot version of God Serena he beat as shown earlier in this thread.
Overall Jellal has the ability to survive the first attack done to him, giving him enough time to get his speed spell up and blitzing her as to not give her the chance to blow him up again before he lands fatal blows himself.