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The freezing process kills the seeds, so they will not germinate.

If the plant becomes too large and is already fruiting, we would recommend staking the plants: https://www.gardeningknowhow.com/edible/vegetables/pepper/stake-pepper-plants.htm

However, if the plant has not started fruiting, you can prune them. Here is more information on this: https://www.gardeningknowhow.com/edible/vegetables/pepper/pruning-bell-peppers.htm

Be aware though that plant may produce fewer fruit if you prune.

Chili plants, like their genetic cousins the tomato, are a warm season crop. This means that as well as a moist environment, chili seeds need sufficient warmth to break their dormancy. Even under optimum conditions, the germination process can be slow and irregular as the degree of dormancy varies considerably between species—some taking up to 6 weeks.

This article will help with growing them: https://www.gardeningknowhow.com/edible/vegetables/pepper/growing-chili-pepper-plants.htm

They may have wilt. Peppers and tomatoes are susceptible to the same diseases and wilt is commonly talked about with tomatoes, but can happen to peppers. This article will have more information:
https://www.gardeningknowhow.com/edible/vegetables/pepper/pepper-wilt-on-plants.htm

This article should help: https://www.gardeningknowhow.com/edible/vegetables/pepper/worms-on-peppers.htm

The following article should be of some help to you: https://www.gardeningknowhow.com/edible/vegetables/pepper/worms-on-peppers.htm