I’ve had some seriously large bell peppers. I just let them sit on the plant, usually 3 or 4 at a time. I fertilize often with liquid 5–10-10 fertilizer but that’s also because mine are in grow bags and bagged/potted plants lose nutrients faster. I’d take a picture but my gf pulled them off and cooked them lol, so waiting on the next wave now.

I use the 5-10-10 because too much nitrogen makes the plant itself grow instead and it gets leggy. 5-10-10 is supposed to be more focused on the blooms and fruit.