Consumable for items can't work.
Minecraft Version 1.21.1 Core Leaf Plugin Version 5.9.1
for this, like wiki
DRAN:
Id: dragon_breath
Model: 10000
Display: '<#c127c1>D<#c04abd>R<#be6cb8>A<#bd8fb4>N'
Lore:
- '...'
Consumable:
ConsumeSeconds: 2
HasParticles: false
Animation: EAT
Sound: item.honey_bottle.drink
ConsumeEffects:
- potion{type=strength;d=1200;level=2}
- potion{type=resistance;d=1200;level=1}
- potion{type=speed;d=1200;level=0}
Food:
Nutrition: 4
Saturation: 8
CanAlwaysEat: true
Options:
Glint: true
FireResistant: true
StackSize: 99