If you would like to disable italics, you can add the following to your settings.json file:
"editor.tokenColorCustomizations": {
"[Seabrook Dark]": {
"textMateRules": [{
"scope": [
"comment",
"invalid",
"keyword",
"entity.other.attribute-name"
],
"settings": {
"fontStyle": ""
}
}]
},
"[Seabrook Light]": {
"textMateRules": [{
"scope": [
"comment",
"invalid",
"keyword",
"entity.other.attribute-name"
],
"settings": {
"fontStyle": ""
}
}]
}
}