Well . . . I've owned a beagle, so I can believe it. Their noses rule, and they'll go to great lengths to get food. I can only imagine how wonderful something like chicken nuggets must smell to them.
When we first adopted our beagle she was two years old. The house we lived in had no garbage disposal, and I'd thrown some leftover spaghetti and meat sauce in the trash and went to take a shower. The trash can was inside a cabinet and in a wire frame holder. She managed to open the cabinet door, get the trash can out of the cabinet and holder onto the kitchen floor, turn it over and eat the spaghetti while I was in the shower.
I do hope that oven wasn't actually on.