Compared to crickets cockroaches are soft bodied, and more Nutritious. I've started breeding them myself but haven't offered any to my frogs yet. I've seen how fast lobster roaches can move and i'd be concerned about a pacman's ability to catch such a fast moving bug. which means you'd have to tong feed it and not all pacman frogs readily feed from them.
you could try offering roaches and see how it goes.
you can feed a pacman anything from small feeder guppies, small commets, rosey red minnows, nightcrawlers, red wigglers, silk worms, super worms, mealworms, waxworms, and rarely
frozen/thawed mice.
BD
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0.0.1 C. ornata
1.0.0 C. cranwelli
0.0.1 Albino C. cranwelli
0.0.1 C. cranwelli x cornuta
1.0.0 yellow C. cornuta
0.0.2 green C. cornuta
1.1.2 Bufo regularis
1.1.0 D. leucomelas
0.0.2 Panamanian D. Auratus
0.1.0 Anerythristic Honduran milksnake
1.0.0 Normal Honduran milksnake
0.0.1 Anerythristic striped cornsnake
1.0.0 Butter het motley cornsnake
2.1.0 Normal ball python
1.2.0 Normal and Sandfire Beared Dragons
0.0.1 Chinese water dragon
2.1.0 New Caledonian Crested geckos
0.0.1 New Caledonian Gargoyle Gecko
1.1.0 high yellow and patternless leopard geckos