I don't have experience with this pepper specifically, but my pepper plants are often forming fruit before I plant them out, with no ill effects that I have seen. Last year I know I harvested a few small seranos while they were indoors.

This however, is much earlier than I have ever started them. You should probably pot them up to larger containers if you are going to let them fruit.

The typical suggestion is to remove any flowers so your plants aren't expending energy early setting fruit, but rather directing that energy to roots and stems. They should catch right up and flower again when you do get them outside....I don't think your overall harvest will be any fewer peppers, it seems to be easier on the plants which may then be smaller overall if allowed to fruit under 'less than ideal' conditions. For many of us, hours spent inside are less ideal than outside. (our hobby lights)