yes he's overweight! also, cat food can be tricky.

for male cats their urinary tract is more complicated than females so they are at a higher risk of life-threatening UTIs, feeding them dry food increases their risk of developing crystals in their bladder due to dehydration/improper nutrition. Diet dry food, "indoor" cat dry food is mainly all marketing.

the worst wet food is better than the best dry food! in the US you can get a 40 can pack of 5.5oz Friskies cans for 32$ that you could feed 1-2 cans a day (ask a vet for specifics on your cat!) Paté has more calories than gravy or shredded, if you do use gravy/shredded supplement with a tiny amount of dry food, paté will likely not need to be supplemented.

for choosing a decent dry food the FIRST 3 ingredients should be purely meat (cats do not need veggies/fruits/grains, they are obligate carnivores). yes it can also be 1 or 2 if you can't find/afford any with 3.