I agree -- don't give up.
I'm tempted to say get some Dixie cups, poke holes in the bottom and transplant one jiffy strip worth in good quality potting soil (I like Dr. Earth or Pro-Mix -- look for them at real Garden Centers not big box stores) and see how they do. You probably used these because you were unsure about transplanting, but it really isn't that difficult.
I'm still sowing more pepper seeds now even though it's almost a month later than normal. I started them 2/16 but these were old seeds and many of them didn't sprout -- these were older seeds (2010 and 2011). Also I may have overcooked them because I was taking temp readings at top of soil level but when I put the thermometer on the top of the plant light where I had them last week while starting some other seeds, I realized it was like 95Ã‚Â° there
There's always something.
It rarely happens that everything goes right.