Arthur,

Because of all the many pigments in pepper plants, I'd not worry about the leaf colors right now, especially since you planted a mix of types. If your plants start showing some distress, then I'd worry, but they look healthy to me.

It looks about time to give each of those peppers in the pot their own pot. I'd leave the big one, plant each of the two smaller ones in its own pot. Don't fertilize right away until they are settled in.

I think you'll do fine growing peppers, heck, they practically grow themselves.

Lainey

Might be the pot size is too small for that variety

I am planting 3-4 peppers (C. Chin) in 24 inch diameter pots. I put up to 8 plants last year in 20 inch planters with much success. I completely understand I may get better yield on a per plant basis with less in the pot, but I never could have enjoyed so many varieties that way. With the heat level of most I grow, I don't need a truckload of anything to use them! This is my first year trying 24 inch pots. These are some BIG planters. I have 6 of them on my patio.

Some varieties such as White Bullet Habanero I think a single plant in a 16-inch pot is correct. They grow amazingly fast and branch a lot. I wouldn't want to crowd that plant.

Just my experience. I feel bad wasting the dirt on a huge planter with one pepper plant when circumstances don't warrant it.

Chris

I plant in individual pots exclusively. It's not practical for all people but it's nice to be able to isolate a plant.

I get occasional white flies, I remove the affected plants, spray them down. Keep them quarantined for a week or until I'm satisfied they're clean.

Also your plants aren't long from getting their roots tangled. I would transplant them to individual pots in the next few weeks.

Don't worry about the discoloration. Happens to me all the time. You're plants look happy, that's what matters.

Have you started hardening off? It could be a little sun burn.