Looks like some sort of caterpillar to me since the holes are in the middle of the leaves. It doesn't look like hornworm damage to me because they typically chew from the edge of the leaf and eat the whole leaf leaving only the stems.

Check out the undersides of the leaves and you might see the culprits. BT works on all cats as long as they aren't too big already. It won't work on a 2" hornworm.

I agree with Dan's diagnosis on the leaf curl.

Scissors work wonders on big hornworms, LOL, but if that was the culprit, all you'd have left would be bare sticks. Yeah I'd think smaller caterpillars or perhaps slugs?

Not sure why Bt wouldn't work on a large hornworms, but if it works on smaller ones, you won't get any bigger ones.

Daninthedirt - thank you. The leaf curling might be over-watering because I just used a garden hose and guessed how much to water. I am going to use a large water bottle from now so I know exactly how much water I'm giving.

Lonejack- I didn't think to check the underside of the leaves.. I'll do that today.

Ediej - it's the first time I'm planting at that location so I don't know yet what kind of pests are lurking around. I've only ever had the holes in the leaves issue late in the season before. I'm still in the same city but the new house has different trees and plants so there are probably new pests around.

Well, measuring the water isn't going to help much. Just look at the soil. If it's soggy, that's too wet. Don't water until the surface is dry.

That being said, for tomatoes, disease is usually a more serious threat than bugs, especially for heirlooms, though container plants are somewhat less threatened by that. You might want to think about preventative fungicide.

Daninthedirt, I'll go check out the garden centers to see what fungicides are sold here.

Well I found the culprit that was eating my leaves.. Well there might be more than one... I pulled it off and wiped away what looks like eggs and threw them all away in the dumpster.

Bt (Bacillus Thuringiensis) is the solution for ALL caterpillars. Most garden centers have it. Just spray the foliage every few weeks, and you'll be done with these guys.

Just to give an update... Turns out I cannot buy BT over here and I would have to call an exterminator to spray it for me. So I carefully searched the two affected plants and removed two caterpillars of some kind. I have been checking every night and haven't had anymore problems since. I will keep checking.

Where are you, and why can you not buy it? Not familiar with any bans on Bt in other countries. There ARE bans on GM-engineered crops that produce their own Bt as an insecticidal mechanism.

I am in the United Arab Emirates. I don't know if it's illegal but for some reason no one sells it.

I asked a few extermination companies if they will just sell me the BT only but they all said no. Fortunately I haven't had any more problems with the caterpillars so far.

That's interesting. I know that markets for Bt have been identified in UAE - date palm, tomatoes, eggplant, and squash. Curious that it isn't sold to general users.

I don't know why I can't get BT either but can get insecticides that are not recommended for edible plants.