peppers always leave me wondering...they seem to take longer to sprout than most veggies. I started 2nd year
seeds, half the jalapeno have come up, half the thai, none of the habanero, and all the anehiems. It has only been 10 days for me, so I will wait another week before I toss mine.
Most of the tomatoes and all the squash came up for me.
I used
seeds last year for beans and radishes (directly outside) with no problems.
I'd suggest you give it a few more days (though squash usually sprout withing 5 days for me).
Shawn