Had also thought of the ridge plate, from experience with other reptiles.
(I also see no fault in an animal biting or otherwise reacting averse when startled in sleep. Also not when some medical things must be done. That's scary for them, but must be done, and even many humans would react kind of weird. For Taco, luckily none of that was necessary yet. But I'd gotten a couple of bites or bad scratches from other animals in somewhat similar situations.)
There is one food I feed Taco from a spoon: tuna (the cactus fruit, not the fish!). Putting it on a dish makes a big mess, so from a spoon. I got him a sturdy wooden spoon as he's after nothing so much than tuna, not even insects.
Seeing the tuna, he suddenly really expands like in preparation for a big meal, goes after the tuna - can't describe it differently -, and then he would try to rip the spoon out of your hands.
My husband didn't really believe me when I said the wooden spoon is necessary, no metal as Taco is really biting down so hard on it he might hurt himself, and he would easily break a plastic spoon, even one made for feeding babies. He than tried it, giving Taco some tuna with the wooden spoon - and said that wow, this animal has a lot of power, suddenly turns into a food monster and if he could, he would have eaten the spoon, too
It is the only food he has taken always and quite immediately so far when offered. With insects it is, sometimes he takes them immediately, sometimes he just looks, licks and is happy with me putting them into the bowl for him to eat later, or he isn't taking them at all that day. He's eating really well, but just not food-motivated and tuna is really the only "I must have it now!" food for him.