If I'm seeing this correctly, most of these will probably not produce.
The recommended spacing for tomatoes isn't for the root spread, it's for the canopy. Because of this, the ones at the corners may do okay, but they will shade all other plants while the sun traverses the sky during the day inhibiting their growth.
You also have a watering problem where the tomatoes will need 4x the amount of water those peppers want, and the wetter soil will inhibit the pepper plants' growth. They generally need to be planted in separate boxes as the soil conditions are completely different.