Yes, they should. I do not see very 'good' soil - by that, I mean well/fast draining. It looks very peaty in the photo. If that is the case, there is a chance that it dried up (while, as you said, you were seldom watering). It may have turned hydrophobic. In that state, it doesn't let water to get to roots. Water is repelled, runs over it, and out of drainage hole(s). To improve, add much more sifted or rinsed perlite. 1:1 ratio would be much better.

If my plant, I would take it out of pot and get rid of all soil. Get even hardened soil off if any. Inspect the roots, and cut off any dry or otherwise damaged. It could be that soil didn't dry up/became hydrophobic, but roots have dried up. In either case, better mix will help. Pot plant into new mix, keep in bit shadier spot for couple of days, and move slowly back to best light you have. In case if roots have all dried up, plant will grow new ones. If that happened, I would keep it in a shadier spot longer and water when new roots start growing. Otherwise, start watering as you would any succulent - when potting mix had dried up almost completely, throughout the pot (not just on the surface). Use bamboo/wooden skewer or chopstick to test.

With good drainage, the plant will get drink when needed, and look great again. It should also grow offsets and bloom...

I agree with Rina, especially on your soil. I live in FL -- hot, humid, rainy in the summer. I have about 15 different gasteria and several gasteraloes. Anything that borders on a succulent -- if it is planted in soil -- is in a blend where the actual cactus/succulent soil is AT MOST 50%, and usually around 33% of the mix. The rest is sifted perlite or (I prefer) washed pumice, or sometimes chicken grit thrown in.

Mine are in both clay pots and plastic. Although the clay pots dry faster than plastic, I never water ANYTHING twice a week -- EVER. The smallest clay posts (3") with a soil mix might get watered once a week, but no more. Gasterias, and even gasteraloes, don't do well in sun, in my opinion. I give mine bright light -- but covered light. They get very little direct sun, maybe 1 hour in the morning. In my opinion, your leaves may not get full and plump again, at least not right away. What I would look for, though, is actually growth of the plant....new leaves from the center.