Legginess can be caused by a few things, such as not enough light. Are the plants all leaning toward a certain direction from which the most sunlight comes? If so, that might be the cause; in which case you might consider supplemental lighting. Also make sure that the plants are not overcrowded.
Avoid giving too much nitrogen, which can cause legginess and lots of vegetative growth vs. flowers; the fact that you do have flowers, though, suggests that this is not the issue.
Sometimes a little too much warmth, such as from a heat mat, can cause leggy seedlings; if you suspect this might be the case, be sure to provide enough airflow. This can also help the lack of fruit issue: Even though peppers self-pollinate, it can help to stir the air a bit with a gentle breeze from a fan, or to brush your hand across the plants gently (which can also help legginess). Or, if you don’t have a lot of plants, you can try hand pollination.
Too high or low temperature can also deter fruiting; when peppers bloom, try to keep the temperature inside the greenhouse below 85F in the day (hot peppers can tolerate higher temps) and above 60F at night.
Legginess can be caused by a few things, such as not enough light. Are the plants all leaning toward a certain direction from which the most sunlight comes? If so, that might be the cause; in which case you might consider supplemental lighting. Also make sure that the plants are not overcrowded.
Avoid giving too much nitrogen, which can cause legginess and lots of vegetative growth vs. flowers; the fact that you do have flowers, though, suggests that this is not the issue.
Sometimes a little too much warmth, such as from a heat mat, can cause leggy seedlings; if you suspect this might be the case, be sure to provide enough airflow. This can also help the lack of fruit issue: Even though peppers self-pollinate, it can help to stir the air a bit with a gentle breeze from a fan, or to brush your hand across the plants gently (which can also help legginess). Or, if you don’t have a lot of plants, you can try hand pollination.
Too high or low temperature can also deter fruiting; when peppers bloom, try to keep the temperature inside the greenhouse below 85F in the day (hot peppers can tolerate higher temps) and above 60F at night.
Hope this helps!