If you need a substitute for Fresno peppers, you can used jalapeno peepers. If those are not available, you can use Serrano peppers.
Jalapeo pepper is a suitable substitute for serrano pepper in a recipe.
Ancho pepper
Paprika or cayenne pepper can be used as a substitute for ground red pepper in a recipe.
Paprika or cayenne pepper can be used as a substitute for red pepper paste in a recipe.
A suitable substitute for green bell pepper in this recipe could be red bell pepper, yellow bell pepper, or poblano pepper.
You can substitute cayenne pepper, paprika, or chili powder for red pepper flakes in a recipe.
A suitable substitute for Aleppo pepper in a recipe is a combination of equal parts paprika and cayenne pepper.
A suitable substitute for cubanelle pepper in a recipe is a bell pepper, as they have a similar mild flavor and texture.
A suitable substitute for green pepper in this recipe could be red pepper, yellow pepper, or even zucchini for a similar flavor and texture.
A good substitute for pepper in a recipe is paprika, cayenne pepper, or chili powder, depending on the flavor profile you are looking for.
A suitable substitute for Anaheim pepper in a recipe is poblano pepper, which has a similar mild heat level and flavor profile.
A good substitute for Thai chili in a recipe is serrano pepper or red pepper flakes.