I started pepper seeds (obtained this spring) on my back porch (SE Facing, covered, light until 1

m) 60+ days ago. Only 15% have sprouted, within the last 3 weeks. Only 2 of those are starting true leaves. It has been above 65* AT NIGHT the whole time, and reached 89* yesterday. It's bright, hot, and humid. Summer is here.
Is 5-6 hours of sun insufficient, despite the ridiculous heat?
Started in coco coir, kept damp, occasional very dilute fish emulsion to feed the rest of the tray (squash, melons, and other things which are performing poorly).
Tomatoes planted at the same time are only now barely getting teeny true leaves. Herbs are 100% no-show. Marketmore cukes up (barely), White Wonder cukes nil.
Last year was fantastic. I started EVERYTHING from seed and it all performed reasonably well (except for the squash, which the vine borers attacked early). This year... late late late and sloooooooowwwwwwwww.....
I originally started everything on January 1. Then it all died due to construction in Late February (tomatoes were up, and a couple peppers... nothing else in marked containers survived the Great Crash of the Windstorm). I assumed that everything would be speedier coming up later, due to the warmer weather in April.... Sigh.