BBVL - growing your own spaghetti sauce, eh?
You can do peppers, 'maters and herbs in the same bed. Basil and tomatoes love to grow together - there’s some technical fancy-ass name for what they do for one another, but I can’t remember what it is. Anyway, they’re good for one another in the garden AND in the cooking pot.
I have some genetic defect in my green thumb that prevents me from successfully starting seeds, but I’ve had oodles of success with pre-started seedlings from the nursery. Lemme tell you what I did last year in my own spaghetti garden and you can use the plan as a leaping-off point.
First, don’t grow chives and parsley in the same bed as the tomatoes. Chives are perennial, parsley is bienniel, and while growing them all together isn’t a big problem, cleaning out the garden in the fall and spring CAN be. I dug out a separate small bed for chives and surrounded them with parsley. Since you’re in a warm climate, your parsley may be just about evergreen, and it makes a pretty border alongside the chives.
Basil, tomatoes and peppers:
I put in two each of three different varieties of tomatoes - two heirloom, two basic beefsteak and two plum tomatoes - in a loose circle. Each plant got its own little metal cage. As they grow up into the cage, tie up the main stems to the cages with snippets of nylon stockings. This may be old wives’ lore, but tomatoes do seem to benefit from lightning, and the metal cages and nylon allegedly help the plants get the electricity they need. As your tomato plants grow, check the stems for blossoms. If you have stems WITHOUT blossoms, pinch them off; they’re just stealing nutrition from your fruit. Don’t use a regular fertilizer, use one specifically made for tomatoes. “Broadband” fertilizer will give you lots of lush greenery, but that’s not what we’re going for with tomatoes.
In another loose circle, next to the tomatoes, I planted two tall bell pepper plants. I have no idea what I’m doing wrong with those, as I never get more than two or three tiny bell peppers off them, but what I do get is yummy, so take that for whatever it’s worth. I put Thai “bird pepper” plants around the bell pepper plants. Very similar leaves, much smaller and more compact plant and it looks like it’s decorated for Christmas when it gets going. I got LOADS of them and they’re REALLY hot! I haven’t personally done jalapenos, but my sister-in-law has and they grow fine among her other peppers.
On the other side of the tomato circle, I put in as much basil as I could fit and stuck some of the leftover basil plants in my flower bed across the yard. Stuff grows like a weed. Pinch off the flowers at the base of the stem as they start shooting up; once again, they’re stealing nutrients from the plant, and pinching them off ensures a longer, heartier harvest of the leaves. You can grow all sorts of basils together, just arrange 'em by size for ease of picking and sorting.
Jeebus, that turned into a long post. Sorry 'bout that, but I hope some of it was helpful. Good luck!